S1 • E2 May 8, 2017 53m
Darwin’s book "On the Origin of Species" shook the scientific world and far beyond. Yet it was his next book, devoted entirely to orchids, which filled in gaps and firmed up his revolutionary ideas. Orchids have an ethereal beauty, whether growing hundreds of feet up in a misty rainforest or along the verges of busy suburban roads. But their exotic flowers are shaped for just one purpose: to draw in pollinators.
