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[Berlin, April 23. Image via Getty]

A woman walks past a part of the science exhibition 'Expedition Future' in a train carriage at Berlin's main train station on April 23, 2009. The exhibition, contained in 12 train carriages, will be travelling to 62 cities to mark 2009 as the year of sciences.AFP PHOTO DDP / MICHAEL KAPPELER GERMANY OUT (Photo credit should read MICHAEL KAPPELER/AFP/Getty Images)