Obama withdraws Alaska's Bristol Bay from drilling
President Obama announced Tuesday that he's removing more than 52,000 square miles of waters off Alaska's coast from consideration for oil and gas exploration or drilling.
Obama to federal agencies: triple use of clean energy by 2020
President Obama issued an executive order on Dec. 5, calling for an increase in solar, wind, and other renewable energy for federal agencies, to 20 percent by 2020 - three times more than the agencies currently use.
Obama climate change speech important, but just a step
Obama argued for the necessity of tackling climate change. Al Gore said it was the "best presidential address on climate" ever.
Emission Impossible: Obama plans to cut carbon output
As part of a planned comprehensive climate change strategy, President Obama will announce an effort in July to reduce carbon dioxide emissions.
Obama signals strong action on climate change
Many environmentalists are encouraged by the fact that Obama is now starting to discuss climate change more.
