The Large Hadron Collider (LHC) particle collider (at CERN, on the French-Swiss border) is set to send its first beam of protons around the ring on September 10. They will accelerate two beams of protons up to about the speed of light, using a track almost 17 miles long, then smash them into each other to see what happens. Possible results? Black holes, new particle elements, dark matter research, and the ever scary total annihilation of Earth. I think that's pretty cool, myself. Well, except for the Earth Annihilation part, but scientists say that won't happen.
Check out the news story here, and check out how small this dude is in the picture. See him at the bottom? Cool place to be...not cool place to be if something goes wrong!