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The Environmental Protection Agency, the White House and other federal departments announced Friday that they are expanding a program for restoring and improving urban waterways nationwide.

EPA Administrator Lisa Jackson, the Obama administration's chief environmental watchdog, is stepping down after nearly four years marked by high-profile brawls over global warming pollution, the Keystone XL oil pipeline, new controls on coal-fired plants and several other hot-button issues that affect the nation's economy and people's health.

Hyundai and Kia overstated the gas mileage on most of their models from the past three years in an embarrassing blunder that could bring sanctions from the U.S. government and millions of dollars in payments to car owners.

The Obama administration on Wednesday announced a tough new rule to limit emissions of mercury, arsenic and other toxic substances from sources such as power plants, a landmark measure that could prevent up to 11,000 premature deaths annually, according to the Environmental Protection Agency.

President Barack Obama on Friday sacked a controversial proposed regulation tightening health-based standards for smog, bowing to the demands of congressional Republicans and some business leaders.

The EPA's tests that measure a vehicle's fuel economy are outdated. They're conducted with professional drivers inside of laboratories using better-performing fuel and with air conditioning turned off for most of the ride.

The proposed reductions fall short of the $100 billion in cuts Republicans campaigned for last fall but represent substantial hits to various programs including law enforcement, NASA, the EPA and arts funds.

Utility companies, refineries and factories may have to spend up to $90 billion to meet new smog standards proposed by the Environmental ...

Move lays the groundwork for an economy-wide carbon cap even if Congress fails to enact climate legislation, sources familiar with process say.

Millions living in nearly 600 neighborhoods across the U.S. are breathing concentrations of toxic air pollutants that put them at a much greater risk of contracting cancer, according to new EPA data.