By Barbara Kessler
Green Right Now
As inventors of all varieties race to develop the magic eco-fuel, the best ion battery or the most effective solar collection system, geologists are quietly exploring how certain types of rocks absorb our human carbon emissions.
The phenomenon is not unique. Trees and plants absorb some carbon. The ocean absorbs carbon. But trees can only do so much, and when they die, they release the carbon back into the atmosphere. The ocean has limits as well; it is already becoming acidic as gobbles our thickening stream of pollution.
Rocks, though, can capture carbon and render it into a solid, where it is virtually inert.
