31:30

I built a long-range LASER turret in my yard!

38:23

100 car batteries wired in parallel!

3:35

Danica Bryant - 'Acid' (Official Music Video)

23:05

This Should Be Impossible...

24:29

Testing CRAZY chemistry recipes from a 1933 formulary book (part 4)

17:30

I made a boat engine out of fish

16:57

This Exotic Material Holds An Invisible Secret (Electret)

42:57

How much ALGAE do you need to breathe? TESTED