The end-Cretaceous mass extinction, which included the elimination of all non-avian dinosaurs, occurred after the impact of the Chicxulub asteroid and during a stretch of the Deccan Traps volcanism in western India. Although it is known that the impact is temporally linked to the extinction, the relative roles are hard to disentangle. To help resolve the scientific debate, researchers at Dartmouth College tried a new approach — they removed...
