EPA chief: Climate plan on track despite mercury ruling

A Supreme Court ruling that undermined a federal rule targeting mercury pollution will not affect the Obama administration's plan to limit greenhouse gas emissions to slow the effects of global warming, the head of the Environmental ...

Utah urges caution over toxic-spill river

Outdoor enthusiasts in Utah were urged Wednesday to use caution along a river tainted by a toxic waste spill at an abandoned gold mine in Colorado a week ago.

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