This is just the beginning! Our collection holds over 300 years of history, including rare newspapers, obituaries, marriage records, birth records, and so much more—most of which you won’t find anywhere else!
Dust, Darkness Might Have Killed Dinosaurs
AP Science Writer Robert Locke reports that a dust cloud 65 million years ago may have obscured the sun for months, dropping land temperatures to below freezing and wiping out many species including dinosaurs. Owen Toon of NASA Ames presents a revised scenario with shorter, more dramatic impacts and a massive energy release from a possible ocean collision.
MENTIONED IN THIS ARTICLE
Robert Locke
San Francisco
Earth
American Geophysical Union
Owen B. Toon
Toon
National Aeronautics and Space Administration
Ames Research Center
Mountain View
Calif
Ames, R&d Associates
Marina del Rey
University of Colorado and Informatics, Inc
Palo Alto
Ocean
Mount St. Helens