This coming Wednesday, scientists in England flip the "On" switch of a Large Hadron Collider (LHC), an action that some fear may cause the end of the world. OK, so that sounds like a joke. But it's not.
http://www.tgdaily.com/content/view/39203/113/
Leading astrophysicists say poppycock, and cite as evidence "the creation of high energy particles in Earth's upper atmosphere, those comparable to the ones LHC will produce, from a constant and natural bombardment from the Sun."
Makes one think, though: what if they're wrong.