... Alaska. It had never appeared when the glaciers of the last ice age were at their peak, locking up in the ice millions of cubic miles of precipitation that would normally have gone into the Ocean. The absence of this water lowered the level of the Bering sea more than 300 feet, enough to turn the shallows of the Bering Strait into a bridge of land connecting the two continents. Folsom culture began nearly ... a thousand years or earlier. To reach mid-continent by that time, men must have crossed to Alaska no later than about 15000 years ago-about the time that last ice age was ending a...

• Word Count: 3974
• Approx Pages: 16
• Grade Level: Undergraduate