People using science to master mayhem. Included: epic railguns; punching robots; and ng bowling ball launchers.

Garage innovators who are taking things to the next level. Included: using fire to charge cell phones; turning garbage into boats; and creating the world's fastest electric dragster.

We're counting down the craziest videos that leave our minds blown. We'll see a double sunset, tattoos that play sound, and a rope climbing moped. These are the internet's most unbelievable videos that only science can explain.