Ancient mineral shows early Earth climate tough on continents

A new analysis of ancient minerals called zircons suggests that a harsh climate may have scoured and possibly even destroyed the surface of the Earth's earliest continents.

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<p><a href="http://www.physorg.com/news132583481.html">Ancient mineral shows early Earth climate tough on continents</a></p> <p>A new analysis of ancient minerals called zircons suggests that a harsh climate may have scoured and possibly even destroyed the surface of the Earth's earliest continents.</p>