Mob Rules

Molecules by themselves aren't that interesting -- put a bunch of them together however, and weird, wonderous things start happening. Combine the right molecules, under the right conditions, and you can just about make anything. But that's where the problem starts -- making anything -- we have a hard time knowing what individual molecules are doing within a crowd of molecules, so it's hard to get them to combine just right. To help with understanding how molecules behave in a crowd, NASA is flying an experiment aboard the ISS to study crowds of molecules outside of earth's gravity. Read more.