Donate

Play Live Radio

Next Up:

0:00

0:00 0:00

Available On Air Stations

KHSU 90.5 and KHSQ 107.7 may experience intermittent outages today as our engineering team updates infrastructure. Livestreams are unaffected. Thank you for your patience.

Comet Evidence

NPR

Published February 22, 2001 at 9:00 PM PST

NPR's Larry Abramson reports that scientists have found evidence that a mass extinction may have been caused by a comet hitting the earth-- millions of years BEFORE dinosaurs walked the earth.