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Carla K. Johnson

This undated photo provided by the Lawndale Christian Health Center in Chicago, shows Dr. Jerry Umanos, one of three physicians killed when an Afghan security guard opened fire on a group of foreign doctors at a hospital in Kabul, Afghanistan on Thursday morning, April 24, 2014. (AP Photo/Courtesy of the Lawndale Christian Health Center, Bernardo Barrios) (AP)

Chicago doctor among those killed in Afghanistan

Carla K. Johnson, Don Babwin

Boston nurses tell of bloody marathon aftermath

Carla K. Johnson

Man with ‘bionic’ leg to climb Chicago’s Willis Tower

Carla K. Johnson

Couple split by Romney Medicare

Carla K. Johnson

Anti-Medicaid states: Earning $11,000 is too much

Carla K. Johnson, Kelli Kennedy

In this January 2011 still photo taken from video, PBS newsman Robert MacNeil, right, interacts with Nick, his 6-year-old grandson, at Nick's family's home in Cambridge, Mass. After a decade off the air, MacNeil returns Monday, April 18, 2011, with a six-part series he reported on autism, inspired by Nick, who is featured in the series. (AP Photo/PBS NewsHour) (AP)

Study in South Korea finds higher rate of autism

Carla K. Johnson

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Sex can be heart attack trigger for couch potatoes

Carla K. Johnson

MacArthur Foundation reveals 2010 “genius grants”

Carla K. Johnson

Doctors don’t rat out their incompetent colleagues

Carla K. Johnson

2 million eager for healthcare on parents’ plans

Carla K. Johnson

Panel: Special diets don’t fight autism

Carla K. Johnson

Studies spotlight problems in FDA device approvals

Carla K. Johnson