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Magma Under Yellowstone Supervolcano

The University of Utah has produced the first 3D image of the underground expanse, giving greater insight to how the hotspot works, Smithsonion reports. It has been erupting for 17 million years, most recently some 640,000 years ago. http://goo.gl/sieMii More From The Brief: time.com/newsletter/the-brief #FullNewsAudioAvailable

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