This article from the BBC describes some of the controversy in the theory that the mass extinction of the Cretaceous period was caused by a meteorite impact. The crater thought by some to be the site of the impact may actually be much older than the Cretaceous event. The article is a follow-up to a BBC television program.
%0 Electronic Source %D September 1, 2005 %T What Really Killed the Dinosaurs? %I BBC %V 2014 %N 20 December 2014 %8 September 1, 2005 %9 text/html %U http://www.bbc.co.uk/sn/tvradio/programmes/horizon/dino_prog_summary.shtml
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