CO2 may help some trees weather ice storms

U.S. scientists say higher levels of carbon dioxide predicted for later this century might help reduce damage to some trees caused by ice storms.

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<p><a href="http://www.physorg.com/news75054187.html">CO2 may help some trees weather ice storms</a></p> <p>U.S. scientists say higher levels of carbon dioxide predicted for later this century might help reduce damage to some trees caused by ice storms.</p>