M.C. Escher's Impossible Structures, Printed in 3D

M.C. Escher's two-dimensional renderings of impossible feats of architecture are endlessly fascinating to look at, precisely because they could not exist as three-dimensional objects. Or could they? Gershon Elber, a computer science professor at the Israel Institute of Technology, has manipulated Escher's optical… » 8/18/12 9:00am 8/18/12 9:00am