Swarm of earthquakes shake Yellowstone

Swarm of earthquakes shake Yellowstone. • Until recently, Bob Smith had never witnessed two simultaneous earthquake swarms in his 53 years of monitoring seismic activity in and around the Yellowstone Caldera. Read more >> http://www.sltrib.com/sltrib/news/56906349-78/swarms-yellowstone-smith-earthquake.html.csp

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