The World's Most Dangerous Greedy Cup
10:05
The World's Tallest Pythagoras Cup—Does It Still Drain?
29:42
Making pop rocks from scratch (is complicated)
23:05
World's Strongest Magnet!
18:06
Can You Charge A Phone with Marbles?
23:05
This Should Be Impossible...
8:55
Magnifying The World's Brightest Flashlight (200,000 Lumens)
8:44
I Melted Wood With Friction
52:57