In this photo taken Tuesday, July 12, 2011, honeybees continue to work on a frame consisting of a beeswax combs, honey, brood and pollen on top of City Hall in Chicago. Beekeeping is thriving in cities across the nation, driven by young hobbyists and green entrepreneurs. The city of Chicago's hives, nine in all, on rooftops and other government property are just part of the boom. (AP Photo/Charles Rex Arbogast)

Associated Press
In this photo taken Tuesday, July 12, 2011, honeybees continue to work on a frame consisting of a beeswax combs, honey, brood and pollen on top of City Hall in Chicago. Beekeeping is thriving in cities across the nation, driven by young hobbyists and green entrepreneurs. The city of Chicago's hives, nine in all, on rooftops and other government property are just part of the boom. (AP Photo/Charles Rex Arbogast)
In this photo taken Tuesday, July 12, 2011, honeybees continue to work on a frame consisting of a beeswax combs, honey, brood and pollen on top of City Hall in Chicago. Beekeeping is thriving in cities across the nation, driven by young hobbyists and green entrepreneurs. The city of Chicago's hives, nine in all, on rooftops and other government property are just part of the boom. (AP Photo/Charles Rex Arbogast)
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