Study finds Chicxulub heat lasted 8 million years (opens in new tab)

An international research team said the Chicxulub impact in present-day Mexico created a subsurface hydrothermal environment that persisted for at least 8 million years after the asteroid struck Earth 66 million years ago. The estimate is about four times longer than earlier assumptions of up to 2 million years, the University of Glasgow said in an account of the study. The researchers combined new laboratory analysis of crater samples with computer modeling of the impact's geological effects...