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Dutch-speaking Leon Zoetebier (right) and French-speaking Franz Coquidor bicycle in opposite directions in the streets of Brussels on January 27, 2011 to highlight Belgium's problems bridging the gulf between the Dutch-speaking north and French-speaking south. (Georges Gobet/AFP/Getty Images)
German bike designer Dieter "Didi" Senft, aka El Diabolo during the Tour de France, presents his latest bicycle invention, the so-called '111-twelve-teeth-rake-bicycle' in Storkow, Germany on March 12, 2012. The bicycle is made of 111 garden rakes. (Patrick Pleul/AFP/Getty Images) #
Congolese boys push a Chikudu (wooden bicycle) as they transport goods to the market of Mushaki, Democratic Republic of Congo on December 4, 2011. Chikudus are as much a source of local pride as they are a part of the local economy. Formal jobs are rare here, and crafting chikudus is a skilled and prestigious occupation.