The Large Hadron Collider (aka the Large Goddamn Hadron Fucking Collider, aka the device that will more than likely end the world, assuming we dont get eaten by Nanobots, is being turned on today (today being 8:15am on Wednesday UK time). They arent going to smash anything into anything yet, they are merely going to test if the accelerator actually works on a single particle.
Yay for science!