Lying beneath the tranquil settings of Yellowstone National Park in the US lies an enormous magma chamber. It’s responsible for the geysers and hot springs that define the area, but for scientists at Nasa, it’s also one of the greatest natural threats to human civilisation as we know it: a potential supervolcano.
http://www.bbc.com/future/story/20170817-nasas-ambitious-plan-to-save-earth-from-a-supervolcano
http://www.bbc.com/future/story/20170817-nasas-ambitious-plan-to-save-earth-from-a-supervolcano
