Before fossil fuels, Earth's minerals kept CO2 in check
Thursday, May 1, 2008 - 17:14
in Earth & Climate
Over millions of years carbon dioxide levels in the atmosphere have been moderated by a finely-tuned natural feedback system - a system that human emissions have recently overwhelmed. A joint University of Hawaii / Carnegie Institution study published in the advance online edition of Nature Geoscience links the pre-human stability to connections between carbon dioxide in the atmosphere and the breakdown of minerals in the Earth's crust...
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