Category: Warming Activists
Written by: admin on Nov 27, 2009 11:46
Comments: None
Tags: carbon dioxide, climate, climate change, effects of climate change, oil, scientists
By Cell Phone, Scientists Assist African Farmers Facing Effects of Climate Change
For much of the last 200 years, levels of atmospheric carbon dioxide hovered around 275 parts per million. In this century, with atmospheric carbon dioxide nearing 390 ppm, and climbing annually by about 2.5 ppm, we are already beyond what many scientists see as a critical threshold…
