6 Volcanoes That Could End The World As We Know It

From dangerous lava flows to potentially catastrophic mega-tsunamis, the effects of volcanic eruptions can be awesome, mesmerizing and frankly terrifying. What's more, it's perfectly conceivable that these eruptions could be powerful enough to end the world as we know it.
Whether they wipe cities from the map or bring nations' economies to their knees, when the world's deadliest volcanoes blow their tops, there's little anybody can do about it. All six of these volcanoes have one feature in common: the devastating potential to change the face of the Earth forever.