U.S. moves to lower tailpipe pollution

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U.S. environmental regulators issued new standards on Friday to reduce the amount of cancer-causing emissions from gasoline, vehicles operating in cold weather and portable gas cans.

The regulations from the Environmental Protection Agency lower benzene in gasoline, reduce exhaust emissions from cars in cold temperatures and tighten fuel containers to prevent the escape of harmful fumes.

The new standards take effect in 2011 for gasoline, 2010 for cars and 2009 for fuel cans.

Benzene, which has been found to cause cancer, is put in gasoline to reduce knocking.