People sit at their computers inside a former hangar at Tempelhof airport before the “Campus Party” electronic event in Berlin August 22, 2012. The technology festival involving workshops, talks, competitions and hackathons will run 24 hours a day from August 21 to 26 in the German capital, according to its organisers. REUTERS/Tobias Schwarz (GERMANY – Tags: SCIENCE TECHNOLOGY SOCIETY BUSINESS) – RTR371DD