These Alabama counties are among 15 areas identified as having the highest potential for elevated radon, a radioactive gas that's the leading cause of lung cancer in non-smokers.

Famed biohacker Bryan Johnson and his Blueprint team devised this measure of harmful plastic particles in your blood.

New options for testing and treating some of the most common sexually transmitted diseases are becoming available, a trend that experts hope will keep downward pressure on U.S. infection ...