Using soil to lock up carbon could help offset global warming

In the journal Nature, Cornell biogeochemist Johannes Lehmann writes that an economical way to help offset global warming is to pull carbon dioxide out of the atmosphere by charring biomass without the use of oxygen.

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<p><a href="http://www.physorg.com/news98375815.html">Using soil to lock up carbon could help offset global warming</a></p> <p>In the journal <i>Nature</i>, Cornell biogeochemist Johannes Lehmann writes that an economical way to help offset global warming is to pull carbon dioxide out of the atmosphere by charring biomass without the use of oxygen.</p>