New slow-motion photography shows the tiny birds shed water much like dogs do: by whipping their heads back and forth. But hummingbirds do it mid-flight and really fast — reaching a G-Force of 34. That's five times faster than a Formula 1 racing car.
Naturalist Mark Derr says our friendship with dogs and wolves goes back thousands of years more than previously believed. His new book explores how the relationship between humans and wolves developed.
Like chimpanzees, dolphins are large-brained and highly social animals, but can they recognize themselves in a mirror? Psychologist and dolphin researcher Diana Reiss discusses her work with dolphin communication and cognition.
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