As tourists stroll between Yellowstone’s 300 active geysers, taking selfies in front of thousands of bubbling, boiling mud pots and hissing steam vents, they are treading on one of the planet’s greatest time bombs.
Magma expanse under Yellowstone supervolcano more vast than thought
As tourists stroll between Yellowstone’s 300 active geysers, taking selfies in front of thousands of bubbling, boiling mud pots and hissing steam vents, t...
