The latest news on global warming
Another study suggests Americans' attitudes about climate change vary with the weather.
The trouble with science is the way ideologues wield it.
Study suggests "Medieval Warm Period" occurred in only a small region.
The design of the European Trading System was deeply flawed.
Fragmented policies, mainly at local and state levels, have led to fewer carbon emissions overall.
Extreme heat waves 'track along with increases in temperatures,' experts say.
William Hohenstein says that farming in the southwest could become more difficult with global warming.
The Mediterranean may one day no longer be suitable for wine production.
The natural gas craze is helping lower greenhouse gas emissions.
The State Department could give soon the go ahead - or the ax - to the Keystone pipeline.