More than half of the country's rivers and streams are in poor biological health, unable to support healthy populations of aquatic insects and other creatures, according to a new nationwide survey released Tuesday.

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In its first major regulation since the election, the Obama administration will impose a new air quality standard that reduces by 20 percent the maximum amount of soot released into the air from smokestacks, diesel trucks and other sources of pollution.

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A federal appeals court has rejected a challenge to a tough new clean air requirement limiting sulfur dioxide emissions.

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The U.S. Environmental Protection Agency is creating a board to help federal agencies carry out two Great Lakes protection programs.

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The U.S. Environmental Protection Agency says it will award $20 million in grants this year for projects to help the Great Lakes.

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Two companies have agreed to pay a $280,000 civil penalty and spend $500,000 on an environmental project to resolve alleged air violations at a Wisconsin plant.

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The Obama administration forged ahead on Tuesday with the first-ever limits on heat-trapping pollution from new power plants, ignoring protests from industry and Republicans who have said the regulation will raise electricity prices and kill off coal, the dominant U.S. energy source.

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The Supreme Court has sided with an Idaho couple in a property rights case, ruling they can go to court to challenge an Environmental Protection Agency order that blocked construction of their new home and threatened fines of more than $30,000 a day.

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Word about what not to apply to your lawn this year is becoming more evident as lawsuits are mounting in the herbicide Imprelis dilemma.

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Word about what not to apply to your lawn this year is becoming more evident as lawsuits are mounting in the herbicide Imprelis dilemma.

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