Category: Warming Activists
Written by: admin on Jul 2, 2009 3:12
Comments: None
Tags: carbon dioxide, climate, co2, earth, environment, scientists
Plant power
Why carbon dioxide concentrations over the past 24 million years or so have never dropped below 200 parts per million, despite environmental conditions that have been favourable for CO2 drawdown by rock weathering and sedimentation, has always been a bit of a mystery.
Now scientists suggest an almost provocatively simple…
