Without hot rock, much of North America would be underwater

A University of Utah study shows how various regions of North America are kept afloat by heat within Earth’s rocky crust, and how much of the continent would sink beneath sea level if not for heat that makes rock buoyant.

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<p><a href="http://www.physorg.com/news101952315.html">Without hot rock, much of North America would be underwater</a></p> <p>A University of Utah study shows how various regions of North America are kept afloat by heat within Earth’s rocky crust, and how much of the continent would sink beneath sea level if not for heat that makes rock buoyant.</p>