Magma mia!

A supervolcano under Yellowstone national park is 2,5 times bigger than previously thought and could be "catastrophic" for the planet if it were to erupt. With a 90 km-long magma chamber, geologists say it could produce ans ash cloud that would make two-thirs of the US uninhabitable. Luckily, scientsts say no eruption is imminent, but they will be keeeping a close eye on it!