Addison AndersonSelf - Narrator Jack Cutmore-ScottNarrator Alexandra PanzerSelf - Narrator Susan ZimmermanSelf - Narrator Bethany Cutmore-ScottNarrator / 制片人 Carolyn BeansSelf - Educator / Educator Chris AndersonSelf - Narrator Chris AndersonSelf - Narrator Harold EvansSelf - Narrator / 编剧 James GilliesNarrator / 编剧 Mark MiodownikSelf - Narrator / 编剧 Camilo RamirezSelf - Narrator / 编剧 A. Ruth ProctorA Ruth Proctor / Article Karen L. CoxSelf - Narrator / 编剧 Alex Gendler(Self - Narrator) / 编剧 Sydney IaukeaSelf - Narrator / 编剧 George ZaldanSelf - Narrator / 编剧 Cynthia Fay DavisSelf / 编剧 Jamie ZeitzerSelf - Educator Kenny CooganSelf - Educator Gabriel PrietoSelf - Educator Dan FinkelSelf - Educator / 编剧 Mariela PajueloSelf - Educator Douglas MacLeanSelf - Educator Javier Antonio QuinonesSelf - Educator Maria Elena De ObaldiaSelf - Educator Antonio Machado-AllisonSelf - Educator Allison LeighSelf - Educator Carly Anne YorkSelf - Educator Nadia FrontierSelf - Educator Layron DeJarnette导演 / Art Director Michelle O'Connell导演 / Art Director Lisa Vertudaches导演 / Art Director Maryna Buchynska导演 / Art Director Vitalii Nebelskyi导演 / Art Director Yael Reisfeld导演 / Art Director Adriana Monteforte Lahera导演 Karen L. CoxSelf - Narrator / 编剧 Cynthia Fay DavisSelf / 编剧 Harold EvansSelf - Narrator / 编剧 Dan FinkelSelf - Educator / 编剧 Alex Gendler(Self - Narrator) / 编剧 James GilliesNarrator / 编剧 Sydney IaukeaSelf - Narrator / 编剧 Daniel Kwartler编剧 / Editorial Producer Mark MiodownikSelf - Narrator / 编剧 Camilo RamirezSelf - Narrator / 编剧 George ZaldanSelf - Narrator / 编剧 Bethany Cutmore-ScottNarrator / 制片人 Olga BarabakhArt Director Jan Willem de WithComposer João Pamplona MendesComposer Carolyn BeansSelf - Educator / Educator Stephanie HonchellEducator Shannon OdellScript Writer A. Ruth ProctorA Ruth Proctor / Article 
