20:10

The Unusual Earth Orbit Circling Above Our Ancient Past | Roger G. Gilbertson | TEDxColoradoSprings

17:43

The Hidden Magic Of The Animal-Human Relationship | James French | TEDxBologna

17:26

I See Dead People: Dreams and Visions of the Dying | Dr. Christopher Kerr | TEDxBuffalo

22:14

Crows, smarter than you think | John Marzluff | TEDxRainier

17:59

Supermassive black holes: most powerful objects in the universe | Martin Gaskell | TEDxMeritAcademy