Carbon Dioxide Levels

New Study Finds Important Global Warming Link

AP | SETH BORENSTEIN | Posted 04.07.2012

WASHINGTON (AP) — The dramatic temperature increases that thawed the last ice age followed spikes in carbon dioxide levels in the air, a new study f...

Greenhouse Gases In Atmosphere Hit Record Levels

AP | Posted 05.25.2011

GENEVA — A report by the U.N. weather agency has found that greenhouse gas levels in the atmosphere reached record levels in 2009. The World Me...

Crops Could Get Toxic In Warmer Climate

Reuters | Posted 05.25.2011

Staples such as cassava on which millions of people depend become more toxic and produce much smaller yields in a world with higher carbon dioxide lev...