“Darkness Shrouds the Planet” –Impact Winter Closes Case on End of Dinosaur Reign

  The asteroid was so large that, even at the moment of impact, the top of it might have still towered more than a mile above the cruising altitude of a 747. “In its nearly instantaneous descent, it compressed the air below it so violently that it briefly became several times hotter than the surface … Continue reading “Darkness Shrouds the Planet” –Impact Winter Closes Case on End of Dinosaur Reign