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86,000 hidden quakes hit Yellowstone as 3 states watch the supervolcano

Scientists have uncovered tens of thousands of previously unseen earthquakes beneath Yellowstone, a reminder that one of the ...

What’s inside Mexico’s Popocatépetl? Scientists obtain first 3D images of the whole volcano

Popocatépetl emerged in the crater of other volcanoes in its current form more than 20,000 years ago and has been active ...