UFOs and Aliens – What Science Says | Donald Prothero | TEDxResedaBlvd
17:30
Why We are Alone in the Galaxy | Marc Defant | TEDxUSF
16:29
Lessons from My Wife in Finding Alien Life | Douglas Vakoch | TEDxKingstonUponThames
14:41
¡Tranqui, que vos podes! | Ale Ortega | TEDxSaintGregory'sCollege
12:41
Wanted: A Science of UFOs | Alexander Wendt | TEDxColumbus
24:02
Is Time Travel, Especially Into the Past Possible? | Matt Szydagis | TEDxSchenectady
12:58
One Simple Solution for Phone-Life Balance | Aaron Samson | TEDxResedaBlvd
17:25
The cult you don’t know you’re in | Rose Owen | TEDxAberdeen
10:25