The US environmental regulator said on Friday it will review recently finalized limits on mercury emissions on new coal-fired power plants in a process that could ease the rules for companies build

The Obama administration proposed on Tuesday the first rules to cut carbon dioxide emissions from new U.S. power plants, a move hotly contested by Republicans and industry in an election year.

U.S.

Fluids used to drill for natural gas likely polluted an aquifer in Wyoming, U.S.

The top U.S. environmental regulator will propose early next year twice-delayed rules on greenhouse gas emissions from power plants, she told the energyNOW television show.

Democrats on Thursday blocked the first major bill in the Senate that would have delayed the Environmental Protection Agency's clean air rules.

The top U.S.

Public health and environmental groups sued the Obama administration on Tuesday to overturn a decision that scrapped tougher standards on smog pollution which causes lung and heart problems.

The U.S.

The U.S. Environmental Protection Agency said on Thursday it has proposed changes to a rule that aims to cut smog-forming chemicals from power plants in 27 states.