The drug, given by injection, isn't going to be on pharmacy shelves anytime soon. But it has now been seen to work in five different species — from mice to monkeys. A human test of the drug is set to begin soon.
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.
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