Health & Science

Two former astronauts have said they are disappointed with the U.S. government's decision to cancel NASA's moon landing program.

A contentious battle between Asia and the West over the fate of the Atlantic bluefin tuna prized by sushi lovers overshadowed a United Nations conference that opened Saturday in the Gulf state of Qatar.

Law enforcement officers who worked near ground zero after the World Trade Center attacks seem to show early signs of heart problems at a higher rate than would be expected for their age, a new study suggests.

Stock market slides may hurt more than your savings. New research suggests they might prompt heart attacks.

People with occasional spikes in their blood pressure could be at higher risk of having a stroke than those with regularly high blood pressure, new studies said Friday.

Women who took the birth control pill beginning in the late 1960s lived longer than those never on the pill, a new study says.

Too much cancer screening, too many heart tests, too many cesarean sections. A spate of recent reports suggests that many Americans are being overtreated. Maybe even President Barack Obama, champion of an overhaul and cost-cutting of the health care system.

Climate change is here and scientists need to do a better job of explaining it to the public, the director of the National Oceanic and Atmospheric Administration said Friday.

Recent reports and guideline changes suggest some medical tests should be delayed, avoided, or done less often:

The vaccine additive thimerosal is not to blame for autism, a special federal court ruled Friday in a long-running battle by parents convinced there is a connection.