Wednesday, 13 November 2013

Resurrecting a River

OnEarth

Parched for more than half a century, California’s San Joaquin -- and its salmon -- are coming back. Details here.

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Agriculture replaces fossil fuels as largest human source of sulfur to the environment

PHYS ORG A PinP photo. Historically, coal-fired power plants were the largest source of reactive sulfur, a component of acid rain, ...