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.

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 ...

White House: Action needed now to slow climate change

Failure to act on climate change could cause an estimated 57,000 deaths a year in the United States from poor air quality by 2100, the Obama administration argued in a report released Monday that warns of dire effects of ...

Decoding the gravitational evolution of dark matter halos

Researchers at Kavli IPMU and their collaborators have revealed that considering environmental effects such as a gravitational tidal force spread over a scale much larger than a galaxy cluster is indispensable to explain ...

'Safer' pesticide could create toxic mercury, study says

A compound in pesticides that replaced another banned for its harmful effects, may threaten humans and wildlife by reacting with mercury in natural water to form a toxic chemical, researchers said Tuesday.

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