A skirmish last week over setup costs only foreshadows the battles ahead for the landmark bill that would slash emissions by 2020.
Natural variations in weather can vary more than climate change signals, experts say.
California's bid to set tougher auto-emissions standards has been stymied by the Bush administration. Now the courts will decide.
Anthropologist Brian Fagan uses Earth's distant past to predict the crises that may lie in its future.
Worries about global warming and rising construction costs give the edge to natural-gas and renewable-energy plants.
The Canadian province of British Columbia hopes to change consumer behavior â€“ and raise revenue â€“ by taxing virtually all fossil fuels, including gasoline and home-heating fuel.
A four-inch core sample is a chapter of ancient history in which a Neanderthal amoeba or a worm can thicken the plot for researchers.
Both leading Democrat and Republican candidates vie to show they can tackle global warming.
Bush's budget request Monday cut funding for renewable energy, but increased spending for science.
Citing high costs of FutureGen, the Energy Department funds less ambitious projects.
The $2 billion worldwide fund highlighted during Monday's State of the Union speech was called both a landmark proposal and an outdated approach.
At the meeting of the world's biggest polluters in Hawaii this week, host US has a chance to show it is serious about action on climate change.
The American Geophysical Union's warning reflects an increasingly vocal scientific community.
Governments must take a gimlet-eyed look. Nuclear's drawbacks haven't gone away.
Huge development around Moosehead Lake would create 500,000 tons of CO2 over 50 years, environmentalists say.
In a dramatic illustration of a broader regional crisis, a Turkish lake three times the size of Washington, D.C., has dried up in the past 15 years.
In the first of a four-part series, the Monitor examines the impact of man-made pressures on the region.
The Golden State filed suit on Wednesday for the right to limit greenhouse-gas emissions from autos.
Global warming is the nuclear issue of our age.