12:47

Watch gravity pull two metal balls together

14:34

Bizarre travelling flame discovery

27:11

You're Probably Wrong About Rainbows

18:52

Solving the mystery of the impossible cord.

28:32

Six questionably legal pencil sharpeners

12:05

Wirtz pumps are really clever

29:42

Why 4d geometry makes me sad

18:03

This weird metal is insanely bouncy