Is human evolution speeding up or slowing down? - Laurence Hurst
4:36
Why do humans have a third eyelid? - Dorsa Amir
5:21
What if you experienced every human life in history?
6:35
The real reason polio is so dangerous
5:28
The tale of the doctor who defied Death - Iseult Gillespie
6:26
Are We All Related?
4:19
Why animals help each other - Ashley Ward
5:17
Why do we have crooked teeth when our ancestors didn’t? - G. Richard Scott
9:39