In 2010, we were reminded of the incredible destructive force lurking deep within our planet when the Eyjafjallajökull volcano in Iceland erupted, sending a massive plume of over 250 million square meters of material up into the air. It shut down air travel all over Europe for days. That’s not so bad, right? Guess what – there’s an active volcano in Yellowstone National Park that could do 10,000 times worse. All it would take is two to three of the world’s five supervolcanoes to erupt in close succession to wreak total havoc on our ecosystem, blotting out the sun and causing famines.