The U.S.

BP made a series of decisions while drilling its doomed Macondo well that saved time but added risks prior to its massive Gulf spill, according to a White House oil spill commission document leaked by a media outlet.

The chart compiled by the commission's investigative team outlines 11 unnecessary actions taken by BP and its partners in the lead-up to the largest offshore oil spill in U.S.

The Obama administration on Tuesday unveiled plans to begin issuing new offshore wind energy leases as soon as next year under an accelerated approval process.

The U.S.

Environmental and pro-drilling advocates pitched dueling messages about expanded offshore oil and natural gas production to the U.S. Interior Department on Monday, as the comment period on a Bush-era energy plan came to a close.

The U.S. Energy Department will award nearly $300 million to a clean cities program to help communities buy alternative-fuel vehicles, Vice President Joe Biden and Energy Secretary Steven Chu said on Wednesday.

The White House budget update released on Tuesday still reflects a controversial Obama administration plan to combat global warming by auctioning all permits to emit greenhouse gases even though Congress has said it will give away a substantial portion to industry.

The White House budget update released on Tuesday still reflects a controversial Obama administration plan to combat global warming by auctioning all permits to emit greenhouse gases even though Congress has said it will give away a substantial portion to industry.

The United States needs to have a climate change law in place before international talks on a climate pact begin in December, two top Obama administration officials said on Monday.

The U.S. House of Representatives narrowly passed legislation in June to cut U.S. carbon emissions from utilities, manufacturers and others 17 percent below 2005 levels by 2020.

Ailing U.S. oil refiners could face a crippling period of contraction under a House-approved climate change bill, making the country more dependent on imported refined products.

Key US lawmakers on Friday defended their plans to establish a system capping greenhouse gas emissions, disputing attacks from Alaska Governor Sarah Palin that climate change legislation in Congress would destroy jobs and hurt the economy.

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