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Cancer-fighting e-mails

The Environmental Protection Agency and the National Weather Service have teamed up to offer a new, free service to fight the most preventable cause of skin cancer, overexposure to the sun's ultraviolet (UV) radiation. The service will notify individuals, via e-mail, when the UV intensity in an area, and therefore the risk of overexposure, will be unusually high.

Every day, the federal government calculates this intensity, or UV index, for 58 U.S. cities. In these locations and surrounding regions, an alert will signal if the next day's noontime UV environment—as ranked on a 1-to-11 point scale—is expected to reach 6 or higher, meaning that it "exceeds historical values" for the area.

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