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California Smelt Spiral Toward Extinction
Time may be running out for California’s most infamous fish. Despite a decades-long rescue effort, the tiny delta smelt appears closer than ever to vanishing from its only natural home, the Sacramento-San Joaquin Delta.

Biologists who track the delta smelt report that its numbers have declined more than 90% over the last five decades. The California Department of Fish and Wildlife for the first time turned up zero delta smelt while conducting its annual autumn survey. Other recent surveys have caught fewer than two dozen fish, scientists said.


 
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The Material That Could Solve the World's Water Crisis - First developed by scientists at the University of Manchester in 2004, graphene, an ultra-strong material composed of a single layer of carbon atoms, has been tipped for many uses from hair dye to super long-life batteries. But one of the material's most exciting properties may be its ability to filter out even the tiniest impurities in water.


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