Support WBURAt This Camp, Kids Learn To Question Authority (And Hack It)Play03:59Download AudioSteve HennAugust 17, 2012 ShareDefCon Kids camp co-founder Chris Hoff, with Conner Gilliam (from left), Conner Fine and Ethan Lai, work on a machine that draws designs on ping-pong balls. The camp is held in Las Vegas. (NPR)
