President Barack Obama is ordering federal agencies to work up national mileage and emissions standards for big rig and work trucks for the first time, seeking to limit pollution from the large vehicles that contribute a disproportionate share of it.
In a ceremony in the Rose Garden Friday Obama... more »
A plane outfitted to measure greenhouse gases has taken off from Colorado on the first leg of a 24-day mission that will take it back and forth across the Pacific Ocean from the Arctic to the Antarctic.
The National Center for Atmospheric Research in Boulder is managing the three-year... more »
Bipartisan legislation requiring Xcel Energy to cut emission at some of its coal-fired power plants has passed its first test at the Capitol.
The House Transportation and Energy Committee voted 10-1 to endorse the bill Tuesday.
It would require Xcel as well as Black Hills Corp. to cut... more »
Gov. Rick Perry and other top Texas officials on Tuesday announced a legal challenge to the federal government's finding that greenhouse gases are dangerous to people, claiming the ruling was based on flawed science.
The EPA in December issued an "endangerment" finding about carbon dioxide and other greenhouse gases,... more »
Colorado business leaders and conservationists say the state will face shorter winters and environmental problems if steps aren't taken to address climate change. They are releasing a report Tuesday on the changes to Colorado's weather as a result of increased greenhouse gases. Warmer temperatures are blamed for the bark beetle's... more »
Officials tell The Associated Press that the Environmental Protection Agency has concluded greenhouse gases are endangering people's health and must be regulated. The EPA will announced its findings at a news conference Monday.
The announcement is timed to boost the Obama administration's arguments at an international climate conference -... more »
The largest and most important U.N. climate change conference in history has opened with a warning that this could be the best, last chance for a deal to control global warming. Diplomats from 192 nations are gathered in Copenhagen for what's seen as the climax of two years of contentious... more »