Compte à rebours avant l'arrivée de l'horloge nucléaire : un guide de trois minutes
22:59
The Dome Paradox: A Loophole in Newton's Laws
32:09
Do Aliens Exist? Professor Brian Cox Answers Your Questions | Honesty Box
13:50
Why Does Everything Decay Into Lead
20:22
The Odds of Life - THIS CHANGED MY MIND
31:33
The Oldest Unsolved Problem in Math
1:33:52
A Conversation with Astrophysicist J. Richard Gott III
13:06
HUGE Magnet VS Copper Sphere - Defying Gravity- Will a Neodymium Magnet Float Inside?
15:01