More than 10,000 years ago, glaciers covered much of North America. New research suggests, however, that there was a period of time during the last ice age when North America wasn't as icy as once thought.
Ronald Janke, a geography professor at Valparaiso University, discovered that sand dunes currently found in Indiana were formed thousands of years ago, when sand blew over from Lake Michigan--something that couldn't have happened if the area had been covered by ice.
This finding opens up the possibility that the Atlantic Ocean was also free of ice. That means some of the first people to settle North America could have traveled to the continent from Europe by boat. Other early settlers probably crossed the Bering Strait from present-day Russia to Alaska.
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|Title Annotation:||EARTH/ICE AGE|
|Article Type:||Brief article|
|Date:||Oct 6, 2008|
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