Is the house of history built on foundations of sand? | Graham Hancock | TEDxReading
20:10
The Unusual Earth Orbit Circling Above Our Ancient Past | Roger G. Gilbertson | TEDxColoradoSprings
17:07
What is Goebekli Tepe | Klaus Schmidt | TEDxPrague
17:42
A Theory You've Never Heard Of | Michael Robinson | TEDxUniversityofHartford
14:59
I've studied nuclear war for 35 years -- you should be worried. | Brian Toon | TEDxMileHigh
13:13
Disappearance of a 50.000 Egyptian Army | Olaf Kaper | TEDxEde
24:15
The Fourth Phase of Water: Dr. Gerald Pollack at TEDxGuelphU
20:29
Why I changed my mind about nuclear power | Michael Shellenberger | TEDxBerlin
15:01