Science and technology

Associated Press
In this March 26, 2013 photo, Aidee Diaz, 36, center, exercises with personal trainer Angela Appleton, left, at the Rauner Family YMCA on Chicago's South Side. Diaz has lost 100 pounds since a simultaneous robotic kidney transplant and obesity surgery in July 2012 at the University of Illinois Hospital & Health Sciences System in Chicago. Diaz says the YMCA workouts are helping her get in shape. (AP Photo/M. Spencer Green)

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