17:45
How we found out evolution is true: John van Wyhe at TEDxNTU
17:59
What if Everything You Know is Wrong: Bob McDonald at TEDxVictoria 2013
23:45
Fermi's Paradox and the Psychology of Galactic Empires | Matthew O´Dowd | TEDxTUWien
15:01
Have you ever imagined how interstellar travel could work? | Ryan Weed | TEDxDanubia
16:10