No end of the world for 2012.
Well, the pseudoscientific supernatural lovers who foretold the end of the world in 2012 were wrong(snigger). But lets take a look at a few nasties which definitely could bring down the curtain on Homo Sapiens Sapiens. From hypervelocity stars, rogue black holes and asteroids to galactic cannibalism, vacuum metastability events, cosmic radiation, gamma ray bursts and magnetars. The universe is a jungle.