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COPYRIGHT 2001 Society for the Advancement of Education
A scientific expedition on a submarine in the Arctic has found the footprints of ancient floating ice sheets--possibly the largest masses of ice ever to cover the Earth's oceans. Studying the formation and demise of these ancient ice sheets may help scientists better understand Earth's climate changes and, in particular, predict whether the melting of today's polar ice could lead to catastrophic floods in the future.
Leonid Polyak, a research scientist at Byrd Polar Research Center at Ohio State University,...
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