See the explosion that mimics the strike of a match

Striking a match isn't a particularly dramatic process. But an explosion that goes off with the tap of a glass rod? Much more dramatic. Yet they both stem from the same reaction. » 9/20/13 6:40am 9/20/13 6:40am

How to make phosphorus by doing disgusting things with urine

Feel like doing a lot of horrible things with pee this weekend? If you did, you'd be following in the footsteps of the least dignified scientist ever. Oh, and you'd need about 1500 gallons of urine. » 7/12/13 7:20am 7/12/13 7:20am

The terrifyingly specific phenomenon that makes your jaw glow green

Did you know that working around a certain chemical can make your jaw glow green and have to be chopped off? Not your teeth. Not your bones. Not your head. Your jaw. Learn what happens when biochemistry gets terrifyingly specific. » 5/19/13 8:00am 5/19/13 8:00am

Check out the crazy-dangerous "phosphorus sun" demonstration

Ever seen white phosphorus? It takes very little heat to ignite, and burns on contact with oxygen. A phosphorus sun is an experiment that involves filling a glass vessel with pure oxygen and lowering phosphorus into it. It doesn't always go well, but at least it's always pretty. » 5/16/13 1:37pm 5/16/13 1:37pm

Millions of years ago, Earth's atmosphere had almost no oxygen

We all know how important carbon and oxygen are in the development of life on Earth. But millions of years ago, there wouldn't have been enough oxygen for animals to exist. What changed? » 11/01/10 10:38am 11/01/10 10:38am