Toxic PCBs linger in schools; EPA, lawmakers fail to act

At first, teachers at Sky Valley Education Center simply evacuated students and used fans to clear the air when the fluorescent lights caught fire or smoked with noxious fumes. When black oil dripped onto desks and floors, ...

Distinguishing earthquake foreshocks and aftershocks

Up to now, there was no way of predicting whether a powerful earthquake was likely to be followed by one of even greater magnitude. But the results of a study recently published in Nature by Laura Gulia and Stefan Wiemer ...

New 3-D imaging technology maps Scottish coral reefs

Newly developed 3-D imaging technology has allowed scientists to map an area of cold-water coral reefs off the coast of Scotland to see whether it has recovered since being declared a Marine Protected Area 16 years ago. The ...

A new way to corrosion-proof thin atomic sheets

A variety of two-dimensional materials that have promising properties for optical, electronic, or optoelectronic applications have been held back by the fact that they quickly degrade when exposed to oxygen and water vapor. ...

EPA issues violation notice to San Francisco

The Trump administration ratcheted up its feud with California on Wednesday as the Environmental Protection Agency issued a notice accusing San Francisco of violating the federal Clean Water Act.

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