SciShowTemporada 2013

SciShow comments on just about any topic from subatomic physics to the Big Bang, toxic chemicals to butt hair, viruses to human societies. Every topic is covered from a scientific perspective but in plain English with a touch of tongue in cheek humor.

Onde assistir SciShow • Temporada 2013

199 episódios

  • Animals That Do Drugs
    E1
    Animals That Do DrugsTurns out humans aren't the only animals that can medicate themselves - many other animals have found ways to deal with illness by using natural remedies. Hank will tell you about some of the most interesting methods animals have found to heal themselves, and maybe get a little crazy in the process.
  • Sugar, Worms, and Space
    E2
    Sugar, Worms, and SpaceIn this week's news, Hank explains how earthworms are doing nanotechnology for us, Americans will soon be eating genetically modified salmon, the Russians are going back to space, and another reason to drink less soda.
  • 3 Whack Weather Phenomena
    E3
    3 Whack Weather PhenomenaHank describes three of the whackest weather phenomena on Earth: atmospheric rivers, fire tornadoes, and ball lightning. Super interesting and super weird.
  • What Happens if Your Body is Exposed to the Vacuum of Space?
    E4
    What Happens if Your Body is Exposed to the Vacuum of Space?Hank answers a SciShow viewer's most pressing question about what happens if the human body gets exposed to space. Would your head really explode?
  • Space News From The Future!
    E5
    Space News From The Future!Today Hank uses his patented prognosticating abilities to tell you about some space news events to watch out for in 2013. What one thing is the Curiosity rover going to spend most of the year doing? Why are we going back to the moon? And what two awesome things are projected to occur around Thanksgiving Day? Find out in this edition of SciShow News!
  • Can We Predict Earthquakes?
    E6
    Can We Predict Earthquakes?Hank talks about why it is so difficult for scientists to predict earthquakes in the short term.
  • Warp Drives
    E7
    Warp DrivesHank talks about how warp drives could potentially work.
  • FAQs About the New Flu
    E8
    FAQs About the New FluIn today's news, Michael Aranda stands in for Hank to talk about this year's flu season. And no, Hank isn't out sick with the flu - he's on the road and out of the studio for a few weeks!
  • How Many Stars Are There?
    E9
    How Many Stars Are There?ERROR IN VIDEO - There are up to 200 BILLION stars in our galaxy...not 200 million. How many stars are there in the universe? This question leads Hank to a couple other questions - How many stars can we see from Earth? How many stars are there in our galaxy? - but the answer to the original question proves elusive.
  • Facts About Fracking
    E10
    Facts About FrackingHank gives us a summary of the important facts about fracking: what it is, why we do it, and how it actually isn't all butterflies and cupcakes.
  • Big Idea: Gunpowder
    E11
    Big Idea: GunpowderChinese alchemists searching for an elixir of eternal life discovered the world's first chemical explosive. Hank has the full story on gunpowder in this SciShow about a big idea of science.
  • DNA and Dung Beetles
    E12
    DNA and Dung BeetlesEmily Graslie of The Brain Scoop (http://www.youtube.com/thebrainscoop) stands in for Hank in this week's news to tell us about an effort to classify every organism on Earth, a fight amongst scientists about what happened in the 8th century, and a whole new look for your DNA. Oh, and some new information about dung beetles! Strap in for a ride through science!
  • SciShow Talk Show #1: Emily, Rhinos, and Cas the Arctic Fox
    E13
    SciShow Talk Show #1: Emily, Rhinos, and Cas the Arctic FoxFeaturing Emily of The Brain Scoop (http://www.youtube.com/thebrainscoop) and Cas the Arctic Fox! We decided it would be cool to have guests come into the studio and talk about science with Hank. In our first episode, Emily Graslie chats about rhinoceros conservation and stumps Hank with a very peculiar bone from the Philip L. Wright Zoological Museum. Then Jessi from Animal Wonders introduces Cas the Arctic Fox...and he's the coolest thing that's ever peed on Hank's desk!
  • How to Make the World's Simplest Motor: SciShow Experiments
    E14
    How to Make the World's Simplest Motor: SciShow ExperimentsHank builds a simple electric motor just powerful enough to make a small screw spin, but also strong enough to blow your mind.
  • 3 Weird Ways Olde Tyme People Got High
    E15
    3 Weird Ways Olde Tyme People Got HighHumans have been processing plants for their narcotic effects for at least 5000 years, historically for ceremonial purposes, to deal with harsh environmental conditions or difficult situations, and sometimes even to supplement nutrient-poor diets. Michael tells you about some of the strange "natural" things our ancestors used to alter their minds, but he can't promise they're not going to be gross.
  • The Most Beautiful Science of 2012
    E16
    The Most Beautiful Science of 2012Michael Aranda substitutes for Hank again in this week's News to tell you about the winners of the 2012 Visualization Challenge, an annual competition run by the journal Science that selects the most elegant and educational graphics, videos and games which show science in action. Science, meet art!
  • SciShow Talk Show #2: Peter, Self-healing Skin, & Professor Claw the Emperor Scorpion
    E17
    SciShow Talk Show #2: Peter, Self-healing Skin, & Professor Claw the Emperor ScorpionFeaturing Peter Winkler, our SciShow graphics guru, and Professor Claw, the emperor scorpion. We decided it would be cool to have guests come into the studio and talk about science with Hank. In this episode, Peter and Hank discuss the science of prosthetic skin and Saturn's rings. Then Jessi from Animal Wonders introduces Professor Claw, the emperor scorpion and Hank debates how cool it is to get stung by a scorpion.
  • Twins x Twins = Twins?
    E18
    Twins x Twins = Twins?At SciShow, we ask the tough questions. Today we explore the answer to the question "if identical twin brothers married identical twin sisters, would their offspring be identical?"
  • Asteroid Fly-By!
    E19
    Asteroid Fly-By!Today Emily Graslie of The Brain Scoop gives us the news about a couple of near- misses for our planet and an update on where astronomers think habitable life might be found in other star systems.
  • Fun With Potatoes & Physics! A SciShow Experiment
    E20
    Fun With Potatoes & Physics! A SciShow ExperimentHank uses a favorite subject of the YouTube community - the potato gun - to teach us about the principles of pneumatics, which use the potential energy of compressed gas to do work in lots of useful machines every day.
  • SciShow Talk Show #3: Katherine, Cats and a Brush-tailed Bettong
    E21
    SciShow Talk Show #3: Katherine, Cats and a Brush-tailed BettongFeaturing Katherine Green, Content and Social Media Manager for SciShow and also Hank's wife, and Quigley, the brush-tailed bettong or woylie. In this episode, Katherine shows Hank some cute wild cats, and then they meet Quigley and Jessi from Animal Wonders and talk about woylie conservation in Australia.
  • Big Idea: Blood Transfusions
    E22
    Big Idea: Blood TransfusionsThe idea of putting blood into a person was a radical one when it was first attempted 350 years ago, but today, more than 15 million pints of blood are donated each year in the U.S. to be used in transfusions to over 5 million patients. Hank tells you the strange story of how blood transfusions got their start in medicine.
  • Meteorite Strikes Russia
    E23
    Meteorite Strikes RussiaEarlier today, a 15 meter wide meteor exploded over siberia with the force of several Hiroshima bombs. Over 1200 people were injured, mostly by flying glass. Here, Hank discusses what happened, what it means, and comparable events in history.
  • Hank Meets a Giant Squid and Other News
    E24
    Hank Meets a Giant Squid and Other NewsHank is back in the studio and is very excited to be able again to share news of the universe with you, including his encounter with a giant squid, an English king discovered under a parking lot, new pyramids discovered in Africa, and how the compound that makes Viagra work might also help you live longer. It's good to be back!
  • SciShow Talk Show #4: Hank and Michael Meet an Alien
    E25
    SciShow Talk Show #4: Hank and Michael Meet an AlienFeaturing Michael Aranda and Kemosabe the prehensile-tailed porcupine. In this episode, Michael attempts to stump Hank and then they meet Kemo and Jessi from Animal Wonders.
  • Weird Places: Göreme National Park
    E26
    Weird Places: Göreme National ParkThere are a lot of weird places on Earth and our new series will explore some of the weirdest. Today Hank takes us to Göreme National Park in Turkey so we can learn about this region's fascinating geological history and about the people who have been living there since the 4th century.
  • Spring, Time for Drunk Birds
    E27
    Spring, Time for Drunk BirdsAs spring approaches in the Northern Hemisphere, we anticipate the fluttering butterflies and the capering baby lambs, and we can also expect to see some birds hammered out of their minds in the trees, and perhaps on the ground. In most cases, these birds have overindulged in the fermented berries and other fruits that froze during the winter and are now thawing - proving an irresistible treat for many kinds of birds.
  • The Science of Genetically Modified Food
    E28
    The Science of Genetically Modified FoodIn the U.S., genetically modified organisms are everywhere, despite the fact that creating GMOs for food is incredibly expensive and time-consuming and their impacts on the environment and on human health are largely unknown. But even though a lot remains unexplained, there's still plenty you need to understand: what GMOs really are, how they're made, and what we do and don't know about them so far. Hank helps you get the facts straight.
  • Spider Rain?!!
    E29
    Spider Rain?!!Hank sets the record straight for us, discussing a rain of spiders in Brazil (!?), a new virus that has the internet all a-twitter, and another asteroid recently found to have hit the Earth (not the one in Siberia!) - are you ready for some DATA?
  • SciShow Talk Show #5: Emily and Hank Meet a Blue-Tongued Skink
    E30
    SciShow Talk Show #5: Emily and Hank Meet a Blue-Tongued SkinkEmily Graslie of the Brain Scoop is back again with some more skulls to stump Hank, and Jessi from Animal Wonders brings in Blueberry the blue-tongued skink.
  • Extreme Animal Cannibalism
    E31
    Extreme Animal CannibalismEvolution doesn't care about ethics - it cares about surviving and getting your alleles out there as much as possible. From that perspective, cannibalism can seem like a pretty good idea to some creatures. Hank introduces us to three different types of animal cannibalism, and tells us about some of the species that practice them.
  • Plasma Rain?
    E32
    Plasma Rain?Last week, NASA published a jaw-droppingly beautiful and kinda terrifying video called "Fiery Looping Rain on the Sun" - Hank takes some time to explain why the video is awesome in today's SciShow News.
  • Richard Feynman, The Great Explainer: Great Minds
    E33
    Richard Feynman, The Great Explainer: Great MindsAside from being a great scientist and teacher, Richard Feynman was a kooky and curious guy who played the bongos, painted, and did math in strip clubs. Hank shares his Feynman love fest with us in this episode of SciShow: Great Minds.
  • Is There Gravity in Space?
    E34
    Is There Gravity in Space?In a word, "yes" - space is packed with gravity. Hank explains how Isaac Newton described how gravity works, and why even though it seems that things are floating in space, they're still effected by gravity. Every object in the universe is constantly attracting every other object in the universe.
  • The Search for Antimatter
    E35
    The Search for AntimatterIf you don't have any idea what antimatter is, you don't have to feel bad - the brightest minds in the world have only recently begun to understand what it is and how it works. Hank gives us the run down on what we know about antimatter, and what we're still trying to figure out.
  • The Manhattan Project
    E36
    The Manhattan ProjectSome of the greatest advances in science have come from humanity's more destructive impulses. This is not the fault of science - when we discover powerful truths about the universe it's up to us to decide how to use them because they can either be boons or banes to the world. There may be no better example of this than the work done by the Manhattan Project - the years long, multinational effort to develop an atomic bomb during World War II. The project created unfathomably destructive weapons and led to a 50 year Cold War with the USSR, but is also the source of a lot of information about the atom we didn't have before, which has led to advances in many beneficial fields, like energy production and medicine. Science, like history, is always complicated.
  • Major Brain Dump!
    E37
    Major Brain Dump!This week on SciShow news, strap in for a trip through the frontier of the human brain. The human connectome is a years long venture to explore and map the pathways of the human brain, and this past week scientists released two terabytes of awesome quality pictures in an enormous data dump which is now freely available to be used in all manner of neurology research.
  • Breaking News: Mars Suitable for Life
    E38
    Breaking News: Mars Suitable for LifeEarlier today, mission specialists with NASA's Mars Science Laboratory announced that they have found, for the first time, evidence of an ancient environment on Mars that could have sustained life. Hank tells us the specifics in this very special, super-exciting episode of SciShow News.
  • π 'N' Science
    E39
    π 'N' ScienceIt's pi day! Hank explains why this irrational number is important to scientists, and discusses a bit of a controversy that surrounds it.
  • Viking Sunstones and Mummy Health Secrets
    E40
    Viking Sunstones and Mummy Health SecretsToday on SciShow news, dead person wisdom is helping enrich our understanding of the natural world - how did Vikings manage to be such awesome navigators? And is heart disease inherent in human beings? Scientists think mummies may have the answer.
  • SciShow Talk Show #6: More About Cats, & Gonzo the Toucanet
    E41
    SciShow Talk Show #6: More About Cats, & Gonzo the ToucanetKatherine is back with more information about cats and Jessi from Animal Wonders shares Gonzo the crimson-rumped toucanet.
  • IDTIMWYTIM: "Organic"
    E42
    IDTIMWYTIM: "Organic"In the world of chemistry, an "organic" compound is often described as anything with carbon in it, and "organic chemistry" is the study of carbon compounds, but there is actually no single definition of what "organic" means in chemistry, and scientists have been arguing about it for a long time. In this edition of "I Don't Think It Means What You Think It Means," Hank does his best to illuminate the confusion so we can better understand what "organic" means to chemists.
  • Weird Places: Blood Falls
    E43
    Weird Places: Blood FallsIn our continuing series on Earth's weirdest places, Hank describes the crazy place in Antarctica known as Blood Falls in all its scientifically strange majesty.
  • A Cure for Ebola, Rabies, & Other Virus Villains?
    E44
    A Cure for Ebola, Rabies, & Other Virus Villains?Viruses are among humanity's greatest threats and it seems like they're always one step ahead of us. But this week, biologists say that they've discovered a new weapon we can use against some of our most nefarious virus enemies - and it comes from our friends the plants. Get the full story from Hank in today's SciShow news.
  • Top 5 Deadliest Substances on Earth
    E45
    Top 5 Deadliest Substances on EarthThere are natural poisons that lurk in bacteria, plants, and fungi pretty much everywhere, and they're there for good reasons (according to the organisms that produce them) - but what is it about their chemical make up that makes them so poisonous? How do their toxins attack the human body with such deadly efficiency? Discover the answers to these and other questions as Hank talks about some of the most deadly natural substances in the world.
  • Anxiety Hurts
    E46
    Anxiety HurtsEverybody knows what anxiety feels like - it's annoying and counterproductive and apparently useless, so why does it exist? It turns out your anxiety isn't useless at all - it's a result of the sympathetic nervous system (in charge of the fight or flight response), which lets you respond immediately to threats and can also help you meet that looming deadline. But you don't want your SNS running the whole show - chronic anxiety not only feels crappy, it damages your cells, alters your brain chemistry, and can exacerbate a wide range of health problems. Hank has the whole story in this episode of SciShow.
  • The Oldest Star in the Universe
    E47
    The Oldest Star in the UniverseHank tells the story of the mysterious star known as "Methuseleh," and why scientists think that it is the oldest known star in the universe
  • NASA Needs You
    E48
    NASA Needs YouHank usually likes to keep science and politics separated, but the reality is that a lot of scientific research in the United States is funded by the government. This is a problem right now because the disfunction in the world of politics has begun to seriously affect the realm of science. Because of sequestration, NASA needs our help!
  • The Retro-Proto-Turbo-Encabulator
    E49
    The Retro-Proto-Turbo-EncabulatorHank brings us a special report on the retro-proto-turbo-encabulator, which could very well revolutionize...uh...something.
  • Space Trash: The Next Big Pickle
    E50
    Space Trash: The Next Big PickleEarth's orbit has a bit of a litter problem. Hank outlines a few ways scientists have thought of to help clean things up.
  • Why Do Cats Purr?
    E51
    Why Do Cats Purr?The smaller members of the felid family can purr, but why? Hank takes on this most adorable of life's mysteries in todays episode of SciShow.
  • Ada Lovelace: Great Minds
    E52
    Ada Lovelace: Great MindsAda Lovelace, Daughter of Lord Byron, was somehow the first author of a computer program...even though she lived more than a century before the first modern computer.
  • SciShow Talk Show #7: Sinkholes, Robotic Mules & Fluffy the Tarantula
    E53
    SciShow Talk Show #7: Sinkholes, Robotic Mules & Fluffy the TarantulaHank is joined by Peter Winkler with some news about sinkholes and DARPA's new robotic mule, and then the boys are joined by Jessi from Animal Wonders and her special friend "Fluffy" the Chilean rose hair tarantula.
  • Why Ferns Have More Chromosomes Than You
    E54
    Why Ferns Have More Chromosomes Than YouChromosomes are fascinating little things, and today, Hank explains why more of them doesn't mean more complex, and why different organisms have different numbers of chromosomes. The short answer: mistakes happen.
  • We're Going Asteroid Wranglin'!
    E55
    We're Going Asteroid Wranglin'!Hank has good news about NASA.
  • 3D Printing and the Future of Stuff
    E56
    3D Printing and the Future of StuffWhat if instead of going to the store to buy a new toilet brush, all you had to do was walk into your office and print one out? With recent advances in 3D printing, such a scenario might not be as far away as you think.
  • Weird Places: Waitomo Caves
    E57
    Weird Places: Waitomo CavesHank brings you the tale of another weird place on earth - the Waitomo Caves of New Zealand, where glowworms emit bluish-green light in a beautiful display.
  • Fairy Rings
    E58
    Fairy RingsHank noticed something mysterious in the park one day. Fairy rings: are they mystical portals to another realm? Or could there be another, more scientific, explanation?
  • Patenting Person Parts
    E59
    Patenting Person PartsSince the advent of genetic engineering, a lot of weird questions have cropped up, particularly with regard to what information a company can patent. Individual genes, as they are discovered, are now immediately patented and can be controlled by the company that owns the patent. Do those gene patents encourage science by providing a monetary incentive for researchers? Or do they discourage science by creating artificial barriers to the use and study of genes by the companies that don't hold the patents. Guest host Michael Aranda discusses.
  • SciShow Talk Show #8: Human-Powered Helicopters and a Red Fox
    E60
    SciShow Talk Show #8: Human-Powered Helicopters and a Red FoxDa Vinci imagined a helicopter powered solely by human muscles. Now more than 500 years later, two teams are using advanced materials to try and make that dream come true. Hank and Catilin discuss these two teams and the Sikorsky Prize that they are battling for. Then Jessi from animal wonders shows of Seraphina the red fox!
  • Gluten
    E61
    GlutenGluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.
  • Why No Giant Mammals?
    E62
    Why No Giant Mammals?Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you!
  • The Science of Terrorism
    E63
    The Science of TerrorismScience can help create understanding where there is none, but is it possible to study and understand terrorists if we're too busy doing everything we can to stop it? Terrorism is notoriously difficult to study because governments constantly subpoena scientists lists of contacts, making source anonymity impossible. And an outbreak of TB in North Korea is terrible and unnecessary, but it is providing an opportunity for North Korea to, potentially, join the global scientific community.
  • The Times and Troubles of the Scientific Method
    E64
    The Times and Troubles of the Scientific MethodScience is working tirelessly night and day to disprove its own theories about how the universe works (or at least, that's what science thinks it's doing). Hank tells us a quick history of how we came to create and adopt the scientific method and then gives us a vision of the future of science (hint: it involves a lot more computers and a lot less pipetting).
  • Stem Cells
    E65
    Stem CellsHank give you the facts on stem cells - what they are, what they're good for, where they come from, and how they're used in medicine.
  • The Majestic Grolar Bear
    E66
    The Majestic Grolar BearAlthough polar bears and grizzly bears aren't all that similar and are definitely separate species, they can interbreed and create fertile offspring in the wild. Hank brings us the story of these misfit bears, which he likes to call grolar bears.
  • The Terrifying Promise of Robot Bugs
    E67
    The Terrifying Promise of Robot BugsImitating nature to build a better (or possibly more terrifying) future. We've been trying to build flapping-wing robots for hundreds of years. And now, ornithopters are finally being developed, and may be used mostly for military purposes. Piezoelectrics make those little bugs possible, and also enhances the ability of robot arms to feel, in other news from The International Journal of Robotics.
  • SciShow Talk Show #9: Brain Frames and a Harris's Hawk
    E68
    SciShow Talk Show #9: Brain Frames and a Harris's HawkToday on the SciShow Talk Show, our Technical Director Nick Jenkins stumps Hank about how many frames per second the human eye can see, and Jessi from Animal Wonders shares Hara the Harris's hawk.
  • 6 Surprising Blood-Drinking Animals
    E69
    6 Surprising Blood-Drinking AnimalsHank introduces us to 6 blood-drinking (or otherwise consuming) animals that you may not be aware of. Don't freak out...
  • Marvelous Medicinal Maggots
    E70
    Marvelous Medicinal MaggotsAlthough it may sound crazy, many doctors use maggots today to clean wounds of dead and infected tissue. This process, called debridement, is important for preventing the spread of infection in a world of increasing antibiotic resistance. Hank has more details on the marvelous maggot in today's episode of SciShow.
  • THE CICADAS ARE COMING!
    E71
    THE CICADAS ARE COMING!Cicadas have developed an amazing strategy for growth, survival, reproduction, and overcoming predation by...doing nothing. They do nothing for years (except sip at the juice excreted from root structures) before emerging in huge, simultaneous swarms. The swarm is so huge that predators can't consume even a fraction of it, but so rare that predator populations can't sustain themselves between emergence events. Clever little things!
  • The Most Venomous Animals in the World
    E72
    The Most Venomous Animals in the WorldThere are a lot of ways to kill and be killed in the animal kingdom, but only a lucky few use the powers of venom. Not all are closely related, so how did they acquire the same defenses, where did venom come from, and how does it work? And what animals can kill you the most quickly? Find the answers to these questions, and more, in today's episode of SciShow.
  • Coriolis Effect: IDTIMWYTIM
    E73
    Coriolis Effect: IDTIMWYTIMDoes your toilet water drain differently than in the other hemisphere? Is it because of the Coriolis effect? Hank has some things to clarify about these questions, and more in this edition of I Don't Think It Means What You Think It Means.
  • How To Make Antivenom
    E74
    How To Make AntivenomBitten by a venomous snake? There's hope! French scientist Albert Calmette developed the first snake antivenom in the late 1890s, and did such a good job that we use his technique to this day. Antivenom works by stimulating the production of antibodies which can smother venom's toxic effects, preventing spread and rendering them harmless. But how do you make it? Well, stay tuned to this episode of SciShow to find out.
  • Exotic Chemistry: World's Oldest Water and The Rarest Element
    E75
    Exotic Chemistry: World's Oldest Water and The Rarest ElementThis week's SciShow news brings you discoveries involving two of the most exotic substances on Earth - the world's rarest element and the world's oldest water. Two great tastes that taste great together? Stay tuned to find out.
  • SciShow Talk Show #10: Telepathic Rats and a Red-lored Amazon
    E76
    SciShow Talk Show #10: Telepathic Rats and a Red-lored AmazonEmily Graslie of The Brain Scoop is back again to stump Hank and to tell us about some fascinating new research in the field of rat telepathy (NO JOKE). Then Jessi from Animal Wonders shares Zoe the Red-lored Amazon parrot.
  • Angelina Jolie & Breast Cancer
    E77
    Angelina Jolie & Breast CancerWhat would you do if you found out that cancer could be lurking in your genes? More people are getting news like that these days as more kinds of cancer are being linked to specific genes and genetic tests let doctors screen your individual genome for signs of susceptibility to the disease. Is the only choice in these cases to remove the part of you that might develop cancer? Hank has some thoughts on this question and more in today's SciShow.
  • Weird Places: Socotra
    E78
    Weird Places: SocotraThe Socotra archipelago in the Arabian Sea supports so many diverse and unique species that it has been described as the most alien place on Earth. Hank takes you on a tour of this weird place in this episode of SciShow.
  • Schrödinger's iPad? New Breakthroughs in Quantum Computing
    E79
    Schrödinger's iPad? New Breakthroughs in Quantum ComputingTwo developments in quantum computing in the past couple of weeks are the harbingers of a whole new era of smart technology. Google announced that it's building a quantum computer designed by a company called D-Wave in partnership with NASA, and government scientists at Los Alamos National Laboratory revealed that they developed a secure quantum computing network two years ago! Get the details about these developments in this episode of SciShow News.
  • A History of Earth's Climate
    E80
    A History of Earth's ClimateEarth had a climate long before we showed up and started noticing it and it's influenced by a whole series of cycles that have been churning along for hundreds of millions of years. In most cases those cycles will continue long after we're gone. A look at the history of climate change on Earth can give us some much needed perspective on our current climate dilemma because the surprising truth is, what we're experiencing now is different than anything this planet has encountered before. So, let's take a stroll down Climate History Lane and see if we can find some answers to a question that's been bugging Hank a lot lately - just how much hot water are we in?
  • Hallucinogens as Medicine
    E81
    Hallucinogens as MedicineIs it possible that, because of the war on drugs, we have demonized a treatment for otherwise untreatable diseases? A way to increase personal well-being, permanently treat depression, break the cycle of addiction, and ease the transition from life into death? The solution to all of these problems (for many people) might be a nice, hallucinogenic trip, but taking that trip can be harder than you might think.
  • Rogue Waves
    E82
    Rogue WavesFor a long time, rogue waves (defined as waves that are greater than twice the height of surrounding waves) were thought to be a myth, like mermaids or the kraken, but recent developments in satellite imagery and oceanic instruments now show that they occur on a semi-regular basis. But we're still not sure why...
  • Kickstarting a Space Telescope?!
    E83
    Kickstarting a Space Telescope?!In the past few years the rise of crowdfunding has allowed for some pretty cool stuff to start existing, and today Hank is excited to announce another awesome Kickstarter - Planetary Resources (of asteroid mining fame) in partnership with the Museum of Flight and The Planetary Society in Kickstarting a space telescope. F'real.
  • SciShow Talk Show #11: Cyborg Eyes and Stumpy the Dumpy Tree Frog
    E84
    SciShow Talk Show #11: Cyborg Eyes and Stumpy the Dumpy Tree FrogSciShow graphics guy Louey Winkler discusses LED contact lenses and the implications of enhancing and assisting human beings with technology, and then attempts to stump Hank with a physics riddle. Jessi from Animal Wonders shares Stumpy the Whites tree frog.
  • The Science of Hangovers
    E85
    The Science of HangoversSo what exactly is it that makes a hangover suck so hard? Turns out there are three things interacting to make you feel miserable. Hank's got the details in this episode of SciShow.
  • What's The Oldest Tree in the World?
    E86
    What's The Oldest Tree in the World?Ancient trees are fascinating, but the answer to the question in the title isn't as cut and dried as it might first seem. There are two major contenders for the superlative, and Hank has all the important information on both of them in this episode of SciShow. Which one would you give the title to?
  • Top 10 New Species of the Year!
    E87
    Top 10 New Species of the Year!Scientists around the world discover about 18,000 new species every year. Each new organism has not only to be found, but also studied, compared, identified and organized -- that's taxonomy, the science of classifying living things and exploring the evolutionary relationships between them. Every May, to celebrate the latest achievements in the field, as well as the birthday of the man who invented it (Swedish scientist Carl Linnaeus), the International Institute for Species Exploration weighs in on the most impressive discoveries of the previous year - the top ten new species of 2013. Who made the list this year? Hank has all the fascinating details in this episode of SciShow.
  • Why Are There Righties & Lefties?
    E88
    Why Are There Righties & Lefties?About 10% of the world population is left-handed. But why does handedness exist and what determines which hand is dominant? Scientists have suggested several theories, but the answer may well lie with evolution.
  • Goodall, Fossey & Galdikas: Great Minds
    E89
    Goodall, Fossey & Galdikas: Great MindsToday we know that humans and chimpanzees share 99% of their DNA and that we have a lot in common. Not just how we look, but how we behave, form groups, defend our turf, and love each other. People didn't always see other primates this way, but in the 1960s and '70s, some amazing intrepid women came along to turn primatology on its hairy head. Jane Goodall, Dian Fossey and Birute Galdikas studied chimpanzees, gorillas and orangutans, respectively, and are the very definition of great minds of science. Their contributions to humanity's knowledge about its closest living relatives is the subject of today's SciShow: Great Minds.
  • Food Mold 101
    E90
    Food Mold 101It's a moldy world out there, especially in the kitchen. You have questions about food mold, right? Well Hank has your answers.
  • Space Hype!
    E91
    Space Hype!Sometimes science news is less about stuff that actually happened, as much as it is about people going "PAY ATTENTION TO ME" and space news is no exception. In fact this week there was probably as much hype as real news, all in the name of bringing people's attention to the importance of space exploration, but Hank is sharing it all with you in this episode of SciShow.
  • SciShow Talk Show #12: Pumas and Slither the Gopher Snake
    E92
    SciShow Talk Show #12: Pumas and Slither the Gopher SnakeHank and Katherine talk about the wild cat known variously as a puma, mountain lion, cougar, panther and catamount and then Jessi from Animal Wonders brings a special animal guest to visit.
  • What is Saliva?
    E93
    What is Saliva?Salvia divinorum, despite sounding like a spell from the world of Harry Potter, can't turn you into an inanimate object, make you leave your body, or set your feet on fire. However, it can make you FEEL like all of those things are happening. This little plant is a hallucinogen - one so powerful and unique that the DEA isn't quite sure how to regulate it. Hank's got the details on this psychotropic member of the sage genus in this episode of SciShow.
  • Weird Pregnancy Tests
    E94
    Weird Pregnancy TestsHank takes us on a trip through the history of pregnancy tests through the ages, from ancient Egypt to the first home pregnancy tests of the 1970s. It's generally not a very pretty story, but it should help make us very grateful for the modern conveniences we have today.
  • BigBrain & Supermoon
    E95
    BigBrain & SupermoonFrom brains to heavenly bodies, this week brings us some super-sized science... BigBrain is the highest resolution map of the human brain that's ever existed; a super high resolution interactive model of King Tut's tomb for anyone to explore from the comfort of home; and tonight, the moon itself will be super-sized - go have a look!
  • 7 Bizarre Uses for Animal Secretions
    E96
    7 Bizarre Uses for Animal SecretionsYou're probably aware of lots of the things we take from animals, but for centuries, humans have been sneaking animal secretions into a bunch of things you probably didn't know about, like your Easter candy, your Mom's perfume, and even that cigarette you probably shouldn't be smoking. We also continue to enjoy delicacies that are only made possible because they come out of some animals' mouths, glands, and butts... So, how many secretions have you slathered on or ingested lately? First you'll have to find out what they are and how they get into your body, which is what Hank will be telling you about in this episode of SciShow. Hooray!
  • The 3 Coolest Things Built By Birds
    E97
    The 3 Coolest Things Built By BirdsThere are a number of bird species that construct pretty cool things - today on SciShow, we'll visit with three of them...
  • The 3 Coolest Things Built By Bugs
    E98
    The 3 Coolest Things Built By BugsLong before there were strip malls, skyscrapers, and combination Pizza Hut/Taco Bells, nature had its own architects: all kinds of creatures create all kinds of structures for living, raising offspring, or maybe just the occasional hook-up. Some of the mightiest and most delightfully complex structures ever built have been erected by bugs, and Hank will show you three of the coolest ones in today's episode of SciShow.
  • Eyeball Licking: Please Don't
    E99
    Eyeball Licking: Please Don'tSo you think eye licking (also known as worming) is just a harmless bit of foreplay? Think again.
  • SciShow Talk Show #13: Spinal Posture & A Legless Lizard
    E100
    SciShow Talk Show #13: Spinal Posture & A Legless LizardIn this episode of the SciShow talk show, Michael and Hank discuss human posture and evolution and Hank shares some personal information, and then Jessi from Animal Wonders shares Leonard, the legless lizard.
  • Weird Places: Australia's Bright Pink Lake
    E101
    Weird Places: Australia's Bright Pink LakeIn this edition of Weird Places, we visit Australia's Lake Hillier, which is a shockingly flamboyant shade of pink. Hank's here to tell you science's best guess as to why.
  • Why Do Tornadoes Hate America?
    E102
    Why Do Tornadoes Hate America?On the 4th of July, Americans like to celebrate the things that make the United States unique, and a lot of those things have to do with our geography. That remarkable geography is also responsible for some pretty unique weather, and unfortunately for the millions of people living in the Midwest, that weather includes tornadoes. In this episode of SciShow, Hank explains why scientists think the U.S. is prone to so many tornadoes.
  • Starfish Eyes, Octopus Blood, and Human Evolution in Action
    E103
    Starfish Eyes, Octopus Blood, and Human Evolution in ActionYou're probably aware that nature has come up with some pretty fascinating animal adaptations over the millennia, and in general, the stranger the adaptation, the more important it is to that organism. Today on SciShow News, Hank has some new discoveries about weird adaptations to report on (including one in humans!), along with the reasons they evolved the ways they did.
  • Will You be Iron Man?
    E104
    Will You be Iron Man?We have the technology! We can rebuild...ourselves! Human interface technologies like Google Glass, robotic prosthetics, and bionic eyes have the potential to help people recover lost abilities, but also to grant us new abilities. Will you someday be able to turn on your super-human hearing just by thinking about it? Maybe...if you live long enough. The question of whether we /should/ well, we'll leave that to the philosophers. This is SciShow!
  • Rosalind Franklin: Great Minds
    E105
    Rosalind Franklin: Great MindsRosalind Franklin was a British scientist who helped discover the structure of DNA, but you most likely haven't heard of her. Hank will attempt to fix this gap in your knowledge on today's SciShow: Great Minds.
  • How to Make A Humanzee
    E106
    How to Make A HumanzeeWe all know about inter species animal hybrids - Napoleon Dynamite's favorite animal, the liger, is a typical example. But could a human and our closest primate relative the chimpanzee also breed a living hybrid? Hank explores this ... delicate question in this episode of SciShow.
  • Roswell & New Signals from Space
    E107
    Roswell & New Signals from SpaceWith news of radio signals from distant galaxies, a government agency that wants to investigate extra-terrestrial life, and the 66th anniversary of the Roswell Incident, this week has felt like a '90s science fiction melodrama. Hank's got all the pertinent details in this episode of SciShow News.
  • SciShow Talk Show #14: Unstumped Hank & A Chinese Water Dragon
    E108
    SciShow Talk Show #14: Unstumped Hank & A Chinese Water DragonToday on the SciShow talk show, Emily fails to stump Hank with a new animal skull, and then Jessi from Animal Wonders shares Lokita the Chinese water dragon.
  • What's Happening to Honey Bees?
    E109
    What's Happening to Honey Bees?You've probably heard about the sudden and mysterious drop in honey bee populations throughout the U.S.A. and Europe. Beekeepers used to report average losses in their worker bees of about 5-10% a year, but starting around 2006, that rate jumped to about 30%. Today, many large beekeeping operations are reporting that up to 40 or 50 percent of their swarms have mysteriously disappeared. This massive die-off of honey bee populations has been dubbed colony collapse disorder, and it is a big, big deal. Find out more in today's episode of SciShow.
  • The Terrifying Truth About Bananas
    E110
    The Terrifying Truth About BananasHank loves bananas and is worried about their future, so he did some investigating and wrote this episode of SciShow to share some kinda scary banana truths with us.
  • Why Do People Kill? And Other Revelations Of Human Nature
    E111
    Why Do People Kill? And Other Revelations Of Human NatureThere are a lot of things that are still not fully understood about the species Homo sapiens - what makes us US? What makes us move the way we do, think the way we do, and kill the way we do? Today on SciShow News, Hank gives us a little bit of insight into human nature.
  • 4 Real Inventions Inspired by Science Fiction
    E112
    4 Real Inventions Inspired by Science FictionWhere science fiction becomes science fact - that is the place Hank is exploring in today's episode of SciShow. Many inventions we use today were first imagined in stories that described fantastical futures. Hank talks about the origins of four of these: the cell phone, the submarine, the telemanipulator (or robot arm), and the taser. Blast off for knowledge!
  • How Is That Not Killing You?
    E113
    How Is That Not Killing You?When Hank watches nature documentaries he always comes away with one big question: how is that not killing you? In today's episode of SciShow he looks at three unusual ways that animals manage not to get killed by nature
  • The World's First Human-Made Nuclear Reactor
    E114
    The World's First Human-Made Nuclear ReactorToday on SciShow, Hank brings us a little science history, telling us the tale of the world's first human-made nuclear reactor, which was built by a team of scientists and students led by Enrico Fermi in a converted squash court under a football field in Chicago. Yes, that Chicago.
  • New Moon, New Disease, New Hero!
    E115
    New Moon, New Disease, New Hero!This edition of SciShow News really is full of "news." Scientists have discovered a new moon orbiting Neptune, a new tick-borne virus threatening the United States, and a new species of shrew who is a real hero. Let's get to it!
  • SciShow Talk Show #15: All About Poop, Plus a Tortoise
    E116
    SciShow Talk Show #15: All About Poop, Plus a TortoiseThe SciShow Talk Show has a new look! And a new guest who isn't new at all - Jessi Knudsen Castañeda from Animal Wonders joins Hank to talk about one of her favorite subjects: poop! They are joined by Augusto Castañeda and Yucca the red-footed tortoise for a visit.
  • Is SHARKNADO Possible?
    E117
    Is SHARKNADO Possible?Well? Is it? No. But that doesn't mean that this ... bizarre ... attempt at cinema doesn't raise some interesting questions. Questions that we will explore in this episode of SciShow. Hold on to your buckets!
  • Pliny The Elder: Great Minds
    E118
    Pliny The Elder: Great MindsBefore there was Google, there were encyclopedias. The very idea of these vast collections of knowledge can be credited to Pliny The Elder. So who was he, and why does he seem to pop up everywhere from Alchemy to Zoology? Hank has the story in this edition of SciShow: Great Minds.
  • Your Pee is Pollution
    E119
    Your Pee is PollutionEver wonder what happens after you flush? You should, because your pee is causing problems! Hank talks about how, and why, human waste is having weird effects on the natural world. We're talking homicidal fish and hermaphroditic frogs...
  • The Science of Sweetness
    E120
    The Science of SweetnessSugar, honey, listen up. Humans love the sweet taste of sweetness, but have you ever wondered why? What's the evolutionary purpose behind our love for sweets? Why can we taste sweet anyway? What are those sugar substitutes really made of? And will this diet cola give me cancer? Hank and SciShow have the answers!
  • The Scary American Bat Die-Off
    E121
    The Scary American Bat Die-OffIn North America, bats are in mortal danger, and the poor little guys can't even activate their own Bat-Signal to call for help. A terrible infection is ravaging their populations, and it's as serious as a heart attack. Hank has the details about what's killing our favorite flying mammals, and what you can do to help.
  • 3 Awesome Discoveries Made by Curiosity
    E122
    3 Awesome Discoveries Made by CuriosityHappy birthday, Curiosity! Michael Aranda and SciShow News celebrate the first anniversary of the Mars Science Laboratory landing on Mars with 3 awesome discoveries that the universe's coolest rover has made so far. Hints: they involve air, radiation and, yes, water!
  • SciShow Talk Show # 16: Invasive Mussels and Heidi Sedivy
    E123
    SciShow Talk Show # 16: Invasive Mussels and Heidi SedivyWelcome back to SciShow Talk Show! This week we introduce our guest, Heidi Sedivy who will be talking about invasive mussels as well as Montana native mussles.
  • What's Killing the World's Amphibians?
    E124
    What's Killing the World's Amphibians?Of the more than 7,000 known species of amphibians in the world, an estimated one third are now threatened with extinction. Hank breaks down the science behind the decline of amphibians around the world, and what you can do to help.
  • Acid, Poop, and Barf: Vultures' Secret Weapons
    E125
    Acid, Poop, and Barf: Vultures' Secret WeaponsVultures, you eat old, putrid dead things for a living. How is that not killing you? Hank explains the secret weapons vultures use to fight off disease, avoid predators, and beat the heat. Prepare for a Sci-Show Gross-Out!
  • The Science of Hyperloop
    E126
    The Science of HyperloopMichael Aranda explains the nuts and bolts of Hyperloop, the new magnet-driven, solar-powered transit system proposed by Spacex genius Elon Musk. Learn how Musk answered three vexing questions to create the transportation of the future -- or maybe the transportation of Futurama.
  • The How, Why, and How Much of Oil
    E127
    The How, Why, and How Much of OilEveryone does it -- using oil, that is. But how much do we have left? How do scientists find it? And where are they looking for it now that the easiest pickings have been taken? Hank has the answers to the how, why and how much of oil. Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids?
  • 3 Facts About Lemmings
    E128
    3 Facts About LemmingsLemmings are small, thickset vole-like animals that live in the Arctic tundra. They live in a harsh environment, are super-cute, kinda mean, and totally misunderstood. But here at SciShow we're going to set the record straight with 3 Actual Facts About Lemmings.
  • The Curious History of the Lab Rat
    E129
    The Curious History of the Lab RatIf you give them any thought at all, you probably associate them with sewers, cargo ships and maybe animated movies about animals that want to become French chefs. But for almost 200 years, tens of millions of rats have played a central role in science, performing a job they did not volunteer for, and one that almost always results in a premature death. Here at SciShow we explore the big questions like, "Why the rat?".
  • Healing Hearts, Space Jewelry, and the Newest Mammal
    E130
    Healing Hearts, Space Jewelry, and the Newest MammalHank reveals the latest discoveries, including a way to make new, beating heart cells, ancient Egyptian jewelry made from meteorites, and the first mammal to be discovered in the Americas in 35 years, the adorable olinguito.
  • Weird Places: Europe's Dancing, Crooked Forests
    E131
    Weird Places: Europe's Dancing, Crooked ForestsHank takes you through the weird, twisted forests of Russia and Eastern Europe, where trees grow at odd angles. What caused trees to grow into big wooden pretzels? Was it wind? Manipulation by woodworkers? Nazis, maybe? See for yourself as Hank explores the possibilities.
  • SciShow Talk Show #17: Cute Skulls and Cute Cavies
    E132
    SciShow Talk Show #17: Cute Skulls and Cute CaviesBefore she left for Chicago, Emily Graslie of The Brain Scoop sat down with Hank to discuss one of her favorite skulls from the from the Philip L. Wright Zoological Museum. Then Jessi Knudsen Castañeda from Animal Wonders joined in with not just one, but two cavies to add to the conversation about all things cute and weird.
  • Why Do We Kiss?
    E133
    Why Do We Kiss?Hank gets all up in your face about kissing -- where does it come from, why do it we do it, and do other animals do it? From ancient India to that date you were on last night (which we won't tell anyone about if you won't), we explore the history of snogging and its role in human evolution.
  • Moon dust, tricky squid, and the world's biggest telescope
    E134
    Moon dust, tricky squid, and the world's biggest telescopeHank explains the enormity of the Giant Magellan Telescope, possibly the biggest telescope ever built, as well as updates about NASA's new mission to the moon, and an unusual discovery about the habits of deep-sea squid.
  • The Weird Truth About Arabic Numerals
    E135
    The Weird Truth About Arabic NumeralsHank unravels the fascinating yarn of how the world came to use so-called Arabic numerals -- from the scholarship of ancient Hindu mathematicians, to Muslim scientist Al-Khwarizmi, to the merchants of medieval Italy.
  • The 2 Secrets to Sending People to Mars
    E136
    The 2 Secrets to Sending People to MarsHank revisits his passion for exploring the Red Planet, breaking down the two biggest challenges of sending humans to Mars: radiation and propulsion. He explains the science behind the obstacles future Mars-bound astronauts will face, as well as they technology they'll have to use to surmount them. Onward!
  • 3 Big Discoveries Made by the International Space Station
    E137
    3 Big Discoveries Made by the International Space StationWe all know it's awesome, and we could watch Chris Hadfield sing all day, but do you know about the awesome science that's being done on the International Space Station? Hank explains three big discoveries made on the ISS that you should know about.
  • What is Sarin Gas?
    E138
    What is Sarin Gas?Hank discusses the chemistry of sarin, the nerve agent that killed more than 1400 people in a chemical weapons attack in Syria.
  • SciShow Talk Show #18: 3D Printing and the Northern Walking Stick Insect
    E139
    SciShow Talk Show #18: 3D Printing and the Northern Walking Stick InsectToday on the SciShow Talk Show, Ben Malouf shows off some of his 3D printed designs and talks with Hank about how he got into the world of 3D printing. Then Jessi from Animal Wonders joins in to share Holmes and Watson, the northern walking stick insects.
  • Why Do We Laugh?
    E140
    Why Do We Laugh?You know what's funny? Why people laugh. Hank talks about the science of laughter: what makes us laugh, what purpose it serves, and even what it can tell us about our mental and physical health. Hilarious!
  • The Biggest Volcano and Small Testes
    E141
    The Biggest Volcano and Small TestesHank reviews the latest in science news, including the discovery of Element 115, the biggest volcano on Earth, and new insights into what it might mean to have small testicles.
  • Why Body Hair?
    E142
    Why Body Hair?In today's episode Hank talks about hair: What's it good for, what's it made of, and why do we have less than other mammals?
  • Human Experimentation: The Good, The Bad, & The Ugly
    E143
    Human Experimentation: The Good, The Bad, & The Ugly In the early days of the space race, agency researchers in Russia and at NASA really weren't sure all what would happen to an astronaut in space. They didn't know if a human mind could handle actually seeing Earth or what would happen to the human body when exposed to long periods of weightlessness. Would their blood forget which way to pump? Would their eyeballs shift or their inner ears wig out? They sent up mice and monkeys and dogs, to see what happened, and in 1961, the Russians strapped a man to a rocket headed for orbit. Yuri Gagarin was the first person in space. The ultimate human guinea pig, he survived, becoming an international hero.
  • What Happens If You're Struck By Lightning?
    E144
    What Happens If You're Struck By Lightning?The chances of you being hit by lightning are small by comparison, but it does happen! Hank will go through what ultimately happens when you are struck by lightning because chances are you will survive to tell it to your friends.
  • The Ingredients for Life in Space
    E145
    The Ingredients for Life in SpaceHank explains the latest developments in space research and the search for life, including the discovery that amino acids may be more common than we thought throughout the solar system, and the latest findings from the Mars Curiosity rover.
  • SciShow Talk Show #19: HIV vs. AIDS & Ash the Chinchilla
    E146
    SciShow Talk Show #19: HIV vs. AIDS & Ash the ChinchillaClinical Sexologist and Sexplanations Host Lindsey Doe teaches Hank the difference between HIV and AIDS. Then Chinchilla Ash teaches Hank about softness.
  • 5 Amazing Facts About Babies
    E147
    5 Amazing Facts About Babies
  • Why Do We Make Glowing Rats?
    E148
    Why Do We Make Glowing Rats?
  • Abundant Water on Mars, and Mongols Rule!
    E149
    Abundant Water on Mars, and Mongols Rule!
  • Resurrection Biology: How to Bring Animals Back From Extinction
    E150
    Resurrection Biology: How to Bring Animals Back From Extinction
  • 3 Odd Facts About Pigeons
    E151
    3 Odd Facts About Pigeons
  • Can We Get to Alpha Centauri
    E152
    Can We Get to Alpha Centauri
  • 5 Things We Learned About Climate Change
    E153
    5 Things We Learned About Climate Change
  • SciShow Talk Show #20: Birds, Cheetahs, and Curly Bird the Turaco
    E154
    SciShow Talk Show #20: Birds, Cheetahs, and Curly Bird the Turaco
  • 3 Weird Things That Happen When You're Pregnant
    E155
    3 Weird Things That Happen When You're Pregnant
  • Brinicles: Icicles o' Death
    E156
    Brinicles: Icicles o' Death
  • Krokodil, fake pot and the real chemistry of drugs
    E157
    Krokodil, fake pot and the real chemistry of drugs
  • Sleep: Why We Need It and What Happens Without It
    E158
    Sleep: Why We Need It and What Happens Without It
  • The History (And Future!) of the Chemistry Set
    E159
    The History (And Future!) of the Chemistry Set
  • Pickles, Probiotics, and Why Rotten Food Is Good For You
    E160
    Pickles, Probiotics, and Why Rotten Food Is Good For You
  • The 8 Smartest People of the Year: 2013's Nobel Winners
    E161
    The 8 Smartest People of the Year: 2013's Nobel Winners
  • What Happens when you Stop Eating?
    E162
    What Happens when you Stop Eating?
  • SciShow Talk Show #21: Innovating Technology & The Veiled Chameleon
    E163
    SciShow Talk Show #21: Innovating Technology & The Veiled Chameleon
  • The Story of the World's Favorite Fossil
    E164
    The Story of the World's Favorite Fossil
  • Where Did Humans Come From?
    E165
    Where Did Humans Come From?
  • What is Wind?
    E166
    What is Wind?
  • 3 Neat Facts About Narwhals (Including: They're Real!)
    E167
    3 Neat Facts About Narwhals (Including: They're Real!)
  • What We Do With Dead Bodies
    E168
    What We Do With Dead BodiesEveryone dies, but what do we do with those bodies? In this episode of SciShow, Hank explores the various options, from mummification to liquefaction, and everything in between.
  • NASA's New Frontier, and the Trouble with "Gravity"
    E169
    NASA's New Frontier, and the Trouble with "Gravity"Hank describes how astronomers used a technique called gravitational lensing to find the most distant galaxy ever detected -- and how NASA is embarking on a new program to use this same technique to peer deeper into space than ever before. He also walks you through some scientific bloopers in the film "Gravity." We won't give it all away, but let's start with this: Sandra Bullock in a diaper
  • What Happens If You Go Without Water?
    E170
    What Happens If You Go Without Water?Ever wondered what happens to your body if you don't get enough water? Our bodies are mostly water by weight, so in today's episode of SciShow Hank explains what happens to your body as it starts to shut down when you go without that tasty H2O.
  • Billions of Earth-Like Planets!
    E171
    Billions of Earth-Like Planets!Hank tells us about the Kepler Space Telescope and its new data!
  • Carl Sagan
    E172
    Carl SaganHank pays tribute to Carl Sagan, noting his accomplishment as an astronomer and his contributions to culture -- both pop and otherwise -- as one of the great popularizers of science. Happy Carl Sagan Day!
  • SciShow Talk Show #22: The Wonders of Working with Animals
    E173
    SciShow Talk Show #22: The Wonders of Working with Animals
  • What Color is Your Blood?
    E174
    What Color is Your Blood?What color is your blood. Red, right? Well, actually, yes. So why does it look blue when you see it through your skin? And is everyone's blood always the same color red (spoiler: no)? Do all animals have red blood ('nother spoiler: no!)? And why is red blood red anyway? Hank gives you the facts on vampires' favorite beverage.
  • Why We Have Pain, & How We Kill It
    E175
    Why We Have Pain, & How We Kill ItHank makes it all better by explaining the biochemistry of pain -- how it works, why we have it, and how painkillers, whether they're over the counter or heavy-duty prescription bad boys, make the pain go away.
  • The 4 Most Irreplaceable Places
    E176
    The 4 Most Irreplaceable PlacesWhat's the awesomest place in the world? Scientists can think of at least 137, the newly released list of the most biologically important places on Earth. Hank explains how ecologists arrived at this list, and takes you on a tour of four of them, from the mountains of Tanzania to the flattened hilltops of Venezuela.
  • Tornado Talk with Mark Heyka
    E177
    Tornado Talk with Mark HeykaHank sits down with local meteorologist Mark Heyka for a 100% chance of fun as they discuss tornados and weather phenomenons. Then Jessi from Animal Wonders comes on to show off a pair of adorable sugar gliders.
  • Can you burn metal?
    E178
    Can you burn metal?You know metal can get really hot, and you probably know that it can melt. But can it burn? Hank shows you how you can burn a hunk of metal like you're some kinda superhero (just be careful, please), and he explains how, in chemistry, "burning" means even more than you thought.
  • Can You Really Be Scared to Death?
    E179
    Can You Really Be Scared to Death?Can you literally "die of fright?" Turns out, you can! In this episode of SciShow Hank explores the mechanisms in your body that activate when you get scared, and how they can sometimes get out of hand.
  • The Science of Typhoon Haiyan and Neutrino Astronomy
    E180
    The Science of Typhoon Haiyan and Neutrino AstronomyMichael Aranda sits in for Hank to talk about the forces of nature that conspired to form Typhoon Haiyan, the strongest tropical cyclone ever measured. Plus, what's neutrino astronomy? You're about to find out, because it's a thing now, and it's pretty freakin' fascinating.
  • Batteries: A Big Idea That Turned on the World
    E181
    Batteries: A Big Idea That Turned on the WorldEven though they power many of our modern conveniences, batteries have a long history. Hank explains how and why these marvels work and what they've been used for over the past 2,000 years!
  • The Door to Hell
    E182
    The Door to HellIn this episode of SciShow, Hank talks about a crater in Turkmenistan that has been on fire for decades and has earned itself the title of: The Door to Hell!
  • This is NOT What Evolution Looks Like
    E183
    This is NOT What Evolution Looks LikeHank explains where that over-simplified image of evolution comes from and what it is actually supposed to mean.
  • Buddha's Birthplace, Poop Transplants & 'Cryptic Cats'
    E184
    Buddha's Birthplace, Poop Transplants & 'Cryptic Cats'Michael Aranda relays the latest in science news, including an archaeological discovery about the earliest days of Buddhism, a new species of Brazilian wildcat, and new insights into the effects of fecal transplants.
  • Dr. Lindsey Doe Talks about Sperm
    E185
    Dr. Lindsey Doe Talks about SpermHank sits down with clinical sexologist Dr. Lindsey Doe and talks about 'fighter sperm'. Then Jessi from Animal Wonders comes on to show off her Quaker Parrot the 'monogamous bird'.
  • Placebos & Nocebos: How Your Brain Heals and Hurts You
    E186
    Placebos & Nocebos: How Your Brain Heals and Hurts YouYou've probably heard how some drugs and treatments make people feel better, even when they turn out to be fake. That's the placebo effect, but how does it work? And could the same effect backfire, causing your brain to make you feel sick when your body is not? Michael Aranda fills in for Hank and explains how these effects go beyond mere mind-over-matter.
  • The Apollo Lunar Lander (And How We Screwed It Up)
    E187
    The Apollo Lunar Lander (And How We Screwed It Up)You called it, and we are grateful! Hank analyzes what went wrong with our intro, which gave us the perfect opportunity to talk about the awesomeness that is the Apollo Lunar Lander!
  • Performance Enhancing Drugs
    E188
    Performance Enhancing DrugsYou've heard about them, but do you how they work? Or why they suck? Hank explains the science behind performance enhancers, including steroids, blood doping, and that stuff supposedly made out of deer antlers. You'll never look at cheating the same way again!
  • Big Martian Lake!
    E189
    Big Martian Lake!Hank shares the latest exciting findings from the Mars Science Laboratory, known to its friends as Curiosity. Learn what Curiosity has discovered about the giant Gale Crater, and what those developments mean for the prospects of ancient life on Mars!
  • Sphincters - The Fascinating Truth
    E190
    Sphincters - The Fascinating TruthSphincters -- they're not just for butts! Hank explains the fascinating truth about these magic rings of muscle, where they appear in the human body and the pretty fantastic functions they perform in the animal kingdom.
  • Glenn Seaborg: Shaking Up the Periodic Table
    E191
    Glenn Seaborg: Shaking Up the Periodic TableHank synopsizes the life and work of Glenn Seaborg, pioneer of synthetic elements, member of the Manhattan Project, and the architect of the last great shake-up of the periodic table.
  • 3 New Discoveries in Space
    E192
    3 New Discoveries in SpaceHank shares three cool discoveries in space science, including a celestial crucible of phosphorous, noble gases found in a supernova, and plumes of water vapor on Europa.
  • The Agony of Motion Sickness
    E193
    The Agony of Motion SicknessWhat happens when your senses come into conflict with each other? In this episode of SciShow, Hank talks about motion sickness: why we have this nauseating experience and how we can avoid it or treat it.
  • SciShow Talk Show: Dr. Diana Six, the Mountain Pine Beetle, and Another Insect that freaks Hank out
    E194
    SciShow Talk Show: Dr. Diana Six, the Mountain Pine Beetle, and Another Insect that freaks Hank outDiana Six teaches Hank about the Mountain Pine Beetle and all its glory, including taste! Then Jessi from Animal Wonders introduces Hank to a couple cuties he is not too sure about.
  • Why Do Men Have Nipples?
    E195
    Why Do Men Have Nipples?If men can't nurse, then why do they have nipples? The answer has less to do with evolution and more to do with your personal development as a teeny tiny embryo. Short version: We're all girls -- at least at first. Hank explains!
  • 3 Great Discoveries of 2013
    E196
    3 Great Discoveries of 2013Hank lays out three of the most awesome discoveries in science in 2013, from the fields of physics, space science and anthropology.
  • Why Do We Burp and Fart (So Much)?!
    E197
    Why Do We Burp and Fart (So Much)?!We all do it, but why? Hank explains the whys and hows of our gaseous emissions.
  • The Smelly, Oozy, Sometimes Explode-y Science of Garbage
    E198
    The Smelly, Oozy, Sometimes Explode-y Science of GarbageYou ever think about where your trash goes? How long it takes to decompose? And whether your garbage can become ... dangerous? You should! Hank explains the science of trash, how we've dealt with it (or not) over the ages, and both the risks and the potential it holds for the future.
  • Science Superlatives of 2013
    E199
    Science Superlatives of 2013Hank counts down some of the science superlatives from 2013: the first, biggest, strongest and longest things that were discovered, built or otherwise described. Find out his year's superlatives. They're the best!

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