Younger Dryas Mammoth-killing Comet Questioned 29JAN09

1. Mammoth-killing Comet Questioned
BBC News, UK
"A study of wildfires after the last ice age has cast doubt on the theory that a giant comet impact wiped out woolly mammoths and prehistoric humans."
http://news.bbc.co.uk/1/hi/sci/tech/7854348.stmhttp://news.bbc.co.uk/nolpda/ukfs_news/hi/newsid_7854000/7854348.stm

2. 12900 Years Ago: North American Comet Impact Theory Disproved
Science Daily (press release) - Jan 26, 2009
http://www.sciencedaily.com/releases/2009/01/090126173729.htm

Journal reference: J. R. Marlon, P. J. Bartlein, M. K. Walsh, S. P. Harrison, et al.
Wildfire responses to abrupt climate change in North America.
Proceedings of the National Academy of Science, DOI: 10.1073_pnas.0808212106
Source: P.V.H.