Yellowstone supervolcano has been hit by 2,500 earthquakes in longest swarm ever recorded

Yellowstone supervolcano has been hit by 2,500 earthquakes in longest swarm ever recorded https://t.co/VQ1fxRNCx7 pic.twitter.com/XaS9K98nZn

— Newsweek (@Newsweek) October 5, 2017