Reasons to Believe

'Snowball Earth' Scenario Plunged Our Planet Into Million-Year Winters

!Yahoo News, "'Snowball Earth' Scenario Plunged Our Planet Into Million-Year Winters," Nov 8, 2010,; http://news.yahoo.com/s/space/20101108/sc_space/snowballearthscenarioplungedourplanetintomillionyearwinters.htm

Subjects: Earth/Moon Design