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Last updated on April 18, 2014 at 9:07 EDT

Science News Archive - August 26, 2006

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Even the simplest of social creatures - single-celled amoebae - have the ability not only to recognize their own family members but also to selectively discriminate in favor of them.

BEIJING (Reuters) - Acid rain caused by sulphur dioxide spewed from factories and power plants affected a third of China's vast land mass last year, posing a threat to food safety, Xinhua news agency said citing a parliamentary report.