Ice Once Covered the Equator

Sea ice may have covered the Earth's surface all the way to the equator hundreds of millions of years ago, a new study finds, adding more evidence to the theory that a "snowball Earth" once existed.

The finding, detailed in the March 5 issue of the journal Science, also has implications for the survival and evolution of life on Earth through this bitter ice age.

http://news.yahoo.com/s/livescience/20100306/sc_livescience/iceoncecoveredtheequator