Forget fireworks, celebrate this 4th of July with a towering inferno of science. Practical Pyromaniac William Gurstelle explains the physics of the phenomenon and shows us how to build our own.
This is a real thing: fire combines with strong dry winds to create a fire tornado. One happened just yesterday in Aracatuba, Brazil. Here's the footage, taken by someone much braver/crazier than I'll ever be.