Science and technology

Associated Press
In this photo from video provided by Intuitive Surgical, Inc. of Sunnyvale, Calif., maker of the da Vinci robotic system, doctors are seen using the device to perform a surgery. Surgeons say the advantages of the system include allowing them to operate sitting down, using small robotic hands with no tremor. But critics say a big increase in robot operations nationwide is due to heavy marketing and hype, and the U.S. Food and Drug Administration is looking into problems and deaths that may be linked with robotic surgery. (AP Photo/Courtesy of Intuitive Surgical, Inc.)

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