Good news: A team of scientists has discovered that we can predict super volcano eruptions “decades in advance.” Bad news: Another team of scientists has discovered that a volcano in Death Valley, California, “may explode at any time.”

The volcano is the Ubehebe, a large volcanic crater to the north of Death Valley. The team, led by Peri Sasnett of the Department of Earth and Environmental Sciences at Columbia University, have published a paper in Geophysicial Research Letters that shows that it may have been formed much earlier than previously thought. Using the same method used to date Moon rocks, Sasnett and his team have discovered that the last explosion occurred only 800 years ago, instead of the previous 10,000 year estimate.

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