22:52
8 ways the world could suddenly end: Stephen Petranek at TEDxMidwest
17:33
Artificial Intelligence: it will kill us | Jay Tuck | TEDxHamburgSalon
17:07
The Myth of Nuclear Weapons: Stories Through the Mushroom Cloud | Daniel Högsta | TEDxUofM
17:58
Are we heading towards World War III? | Heni Ozi Cukier | TEDxLisboa
16:10