radiation

Researcher say that kidneys change in space, and the organs' cells filtering waste out of the body begin to fail. Excessive radiation is thought to be to blame.

The new certificate recognizes as many as 550,000 veterans who were exposed to nuclear weapons tests between 1945 and 1992. But the certificates leave a...

The EPA is pursuing rule changes that experts say would weaken the way radiation exposure is regulated, turning to scientific outliers who argue that a…

A new mapping technology is helping doctors determine where to place life-saving catheters in patients with irregular heartbeats without the use of…

Unnecessary treatment of breast cancer and other diseases is pervasive. Overtreatment adds enormous costs to the health care system and, at times, burdens patients with needless suffering.