Wednesday, September 10, a bunch of Smart People in Switzerland will fire up the biggest atom smasher ever made, the CERN Large Hadron Collider. It will either reveal the deepest secrets of the universe or create a black hole that will gulp down the whole planet. Maybe even the whole universe.
Actually, the chances we'll all wink out of existence are slim -- but they're not zero. You might want to spend the next 48 hours or so working on your bucket list. Just in case.