One of these things is not like the other: A 3-D printed model of a beige cowbird egg stands out from its robin's egg nest mates, though their shape and heft are similar.
Ana Lopez/Courtesy of Mark Hauber
May 26, 2015 Faux eggs made with 3-D printers are better than sculpted versions, researchers say, because it's easier to systematically vary their size, weight and other features. Next goal: 3-D fragile shells.
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August 28, 2013 A New York design team has just produced an invisibility cloak for your cellphone. Pop it in and no government, no merchants, no friends, no one knows where your phone is. Another design team in Canada says it could do stuff like this — but it won't. Who's right?
July 28, 2011 In the first hour of Talk of the Nation, restorative justice, and an update on the stalled revolution in Egypt. In the second hour, high school dropouts talk about where they are now, and we talk about what makes an effective camouflage.
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