03/18/2010 05:12 am ET | Updated May 25, 2011

New Findings On How Plants Breathe May Save Water

The tighter a plant can keep its pores, the less water it loses and the less water it requires to grow. And since carbon dioxide levels are 40 percent greater than in preindustrial times, it would seem that plants could now get plenty of carbon dioxide with out losing too much water -- an odd and perhaps beneficial consequence of the accumulation of greenhouse gases.

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