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By Science News, 13:08 PM September 22, 2011

Plastics sloughed off clothing can pollute coastlines. See “Synthetic lint ends up in oceans.”

Arctic sea ice this year was near its smallest extent on record. Read “Summer Arctic melt among worst ever.”

Natural killer cells are caught in the act of feeding poison pills (below) to tumors. See “News in Brief: Genes & Cells.”

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