Web Directory

» The Cretaceous-tertiary Extinction Bolide
   Article from Science Frontiers Online arguing that the discovery of a worldwide iridium-rich layer is supporting evidence for the collision of an asteroid or comet with the earth about 65 million years ago.
   http://www.science-frontiers.com/sf023/sf023p09.htm

» The Great Extinction
   Synopsis of a lecture at the University of Manchester on the causes of the disappearance of the dinosaurs, particularly the hypothesis that they were wiped out due to a cosmic disaster.
   http://www.elp.manchester.ac.uk/pub_projects/2003/MNZO0MLK/lecture15.htm

» What Killed the Dinosaurs?
   Article from the National Museum of Natural History which discusses the impact of a meteorite that struck the Earth 65 million year ago and which is believed to be responsible for the mass extinctions of the period.
   http://www.mnh.si.edu/earth/text/5_3_4_3.html