In this photo taken Tuesday, July 12, 2011, beekeeper Michael Thompson prepares 

In this photo taken Tuesday, July 12, 2011, beekeeper Michael Thompson prepares to examine a bee hive of over 1000,000 bees high above Randolph Street on the roof of City Hall in Chicago.  The Chicago bees' success could be due to the city's abundant and mostly pesticide-free flowers. (AP Photo/Charles Rex Arbogast)
Associated Press
In this photo taken Tuesday, July 12, 2011, beekeeper Michael Thompson prepares to examine a bee hive of over 1000,000 bees high above Randolph Street on the roof of City Hall in Chicago. The Chicago bees' success could be due to the city's abundant and mostly pesticide-free flowers. (AP Photo/Charles Rex Arbogast)
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