Robin Garrison, an off-duty 42-year-old firefighter, was walking in Berliner Park in Columbus, Ohio, in May when he saw a woman sunbathing topless under a tree.

He approached her and they started talking and getting comfortable, the woman smiling and resting her foot on his shoulder at one point.

Eventually, she asked to see Garrison's penis; he unzipped his pants and complied.

Seconds later, undercover police officers pulled up in a van and arrested Garrison; he was later charged with public indecency, a misdemeanor, based on video footage taken by cops who were targeting men having sex or masturbating in the park. While topless sunbathing is legal in the city's parks, exposing more than that is against the law.

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Law enforcement officials say that such sting operations are an extremely effective means of lowering crime rates and stopping the criminally minded before they commit worse offenses. From early 2006 to the spring of 2007, there were 160 citations for public indecency in the city, according to an investigation by 10TV News. Among those who were caught in the stings: an Ohio State University doctor, government employees and a retired highway trooper.

The World Health Organization plans to urge smoking bans worldwide based on a landmark California study that was the first to add breast cancer to a list of diseases caused by secondhand tobacco smoke.

The WHO will announce today at the 13th World Conference on Tobacco or Health in Washington that the study by California's Environmental Protection Agency (CalEPA) will be the scientific basis for recommendations due in September.

"It contains the most updated research," says Yumiko Mochizuki, director of the WHO's Tobacco Free Initiative. The CalEPA report and the WHO policy will be published together, Mochizuki said.