Robots Take on Social Tasks

Colin Angle, iRobot co-founder and CEO, holds his company's new iRobot Looj Gutter Cleaning robot during a presentation at the DigialLife trade show at New York's Javits Convention Center, Thursday, Sept. 27, 2007. The Looj cleans an entire stretch of gutter from one location, reducing the number of times a ladder must be repositioned and climbed during gutter cleaning. (AP Photo/Richard Drew)