WASHINGTON D.C. — The Chicxulub asteroid impact that wiped out the dinosaurs likely released far more climate-altering sulfur gas into the atmosphere than originally thought, according to new research. A new study makes a more refined estimate of how much sulfur and carbon dioxide gas were ejected into Earth’s atmosphere from vaporized rocks immediately after the […]
Using the tiniest of clues, scientists have determined what probably killed the woolly mammoths of St. Paul Island — thirst. “It looks like climate did them in,” said Matthew Wooller, the UAF scientist who in 2013 went to St. Paul as part of a diverse team and brought back lake cores for analysis. “The smoking […]
One foggy day on St. Paul Island, a woolly mammoth stepped onto a trapdoor of greenery. It plunged thirty feet to the floor of a cave. There was no exit. A few thousand years later, a scientist who descended by ladder found the mammoth’s tooth amid the bones of other mammoths, polar bears, caribou, reindeer […]