Why do humans have a third eyelid? - Dorsa Amir
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Why do cats have vertical pupils? - Emma Bryce
5:48
Is human evolution speeding up or slowing down? - Laurence Hurst
4:58
Why do cats act so weird? - Tony Buffington
12:30
Evolution FAILS in the Human Body
8:56
17 Jaw-Dropping Facts You Didn't Know About the Body
4:40
Third eyelid (nictitating membrane)
5:50
Why bats don't get sick - Arinjay Banerjee
5:41