All in the family: Nino Giarratano (left), the head baseball coach at the University of San Francisco, joins hands with his father, Mickey Giarratano, after the transplant of a kidney from son to father at Porter Adventist Hospital in Denver last year. AP/Courtesy Giarratano Family hide caption

itoggle caption AP/Courtesy Giarratano Family

A Transportation Security Administration volunteer demonstrates a full-body scanner at Chicago's O'Hare International Airport in March 2010. Scott Olson/Getty Images hide caption

itoggle caption Scott Olson/Getty Images

University of Miami pediatrician Judith L. Schaechter gives an HPV vaccination to a 13-year-old girl last week in Miami. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

A truckload of live turkeys arriving at a Cargill processing plant in Springdale, Ark., on Aug. 4. Cargill recalled fresh and frozen ground turkey products produced at the plant from Feb. 20 through Aug. 2 due to possible contamination from the strain of salmonella linked to 76 illnesses and the one death. Danny Johnston/AP hide caption

itoggle caption Danny Johnston/AP

Peanuts were a problem for 9 percent of households that reported someone with a food allergy or intolerance. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Three examples of proposed warning graphics that will appear on cigarette packaging as part of the government's new tobacco prevention efforts. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

An AquAdvantage genetically engineered salmon behind a non-transgenic Atlantic salmon sibling of the same age. Courtesy of AquaBounty Technologies hide caption

itoggle caption Courtesy of AquaBounty Technologies