This assumes that scientists really know this much. --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 13:03, 11 July 2007 (EDT)
Can we be sure of this? I don't think there are any articles that can prove this is exactly true. Also, I'm new to this site, so I'm not sure how to correctly sign off.
(Reagansbiotch 7/29/07, 12:27 a.m. EDT)