A spike of platinum buried deep in Greenland’s ice sheet has puzzled scientists for more than a decade, feeding speculation that a comet or asteroid slammed into Earth roughly 12,800 years ago and ...

Scientists studying ancient ice in Greenland have uncovered a warning for the modern world: A relatively modest eruption in Oregon sent ash more than 5,000 kilometers across North America and the ...

New research from the University of St Andrews has precisely dated an eruption from Newberry Volcano and discovered that its ash spread more than 5,000 km across the globe, far further than previously ...