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Consumers get agitated when they see apples, celery and red peppers singled out for containing the most pesticide residue. Scientists say it's not such a big deal because the pesticide levels are extremely low.

TEDMED has rolled into the nation's capital, and the conference is drawing hip health care geeks from around the world. Cookie Monster came, too.

David Ford is a painter, performance artist and provocateur. Ford also travels the world - to Mexico, Morocco, Guatemala, Cuba, and Turkey - for "on-site…

Nearly two years ago, President Hamid Karzai called for armed private security contractors in his country to be replaced by a state-run force. The Afghan Public Protection Force took over last month, and its off to a rocky start.

Argentina invaded the Falkland Islands 30 years ago Monday, touching off a short but bloody war with Britain. Argentina lost, and the islands in the frigid South Atlantic stayed under British control. However, Argentina still claims the islands.

Known as the Father of Loud, Jim Marshall helped a generation that included Pete Townsend and Jimi Hendrix redefine popular music by turning up the volume.

Hospitals trying to eliminate unhealthy food from their cafeterias are finding that uprooting fast food chains isn't easy.

Ecologist and "natural security expert" Rafe Sagarin thinks our systems for dealing with natural disasters and terrorist attacks need to be updated. The best place to turn for advice? Other organisms.

On the 150th anniversary of the nation's highest military honor, two recipients share their stories. While badly wounded and under heavy fire, recalls one Vietnam War veteran, "what goes through your mind is the understanding that if you don't do something ... then everything is lost."

The Obama administration is trudging ahead with policies designed to protect the integrity of scientific research. But critics of the process say the policies that have been released so far don't do enough to prevent political manipulation of science.