Comet Impact Theory Disproved

 

http://www.spacedaily.com/reports/Comet_Impact_Theory_Disproved_999.html

 

by Staff Writers
Bristol, UK (SPX) Jan 28, 2009
New data disproves the recent theory that a large comet

exploded over North America 12,900 years ago, causing a shock wave that travelled across North America at hundreds of kilometres per hour and triggering continent-wide wildfires.