Supernova blast 41,000 years ago led to extinction of mammoths
This theory, if proven correct, would explain the discovery of frozen mammoths in Alaska following a sudden change in climate that must have occurred very quickly – fascinating...
A supernova blast 41,000 years ago started a deadly chain of events that led to the extinction of mammoths and other animals in North America, according to two scientists.
If their supernova theory gains acceptance, it could explain why dozens of species on the continent became extinct 13,000 years ago.
Mammoths and mastodons, both relatives of today's elephants, mysteriously died out then, as did giant ground sloths, a large-horned bison, a huge species of armadillo, saber-toothed cats, and many other animals and plants.
Read the full article...<http://dsc.discovery.com/news/briefs/20050926/mammoth.html>
