A bee sits on a honeycomb from a beehive at Vaclav Havel Airport in Prague September 6, 2013. Honey produced by the bees are checked for its quality and presence of pollutants to help the Vaclav Havel Airport Prague to collect pollution data about the environment. 
Picture taken September 6, 2013. REUTERS/David W Cerny (CZECH REPUBLIC  - Tags: AGRICULTURE ANIMALS SOCIETY ENVIRONMENT TRANSPORT) - RTX13BFV