Far Fewer Tech Start-Ups in 2013 Than 2012 (Infographic)

In this Thursday, Dec. 12, 2013 photo, mechanical and software engineer Julian Fong, right, and vehicle design engineer Jon Stevens work on a development to the Copenhagen Wheel, red disk, a human/electric hybrid bicycle engine at Superpedestrian in Cambridge, Mass. AP Photo/Stephan Savoia

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