Experts say one way to mitigate the current blood donation shortage is to provide incentives for donors. (Photo illustration: Yahoo News; photos: Getty Images) On Sept. 11, the American Red Cross ...

A heat-vision camera could one day help crime scene investigators photograph hidden bloodstains and other clues, scientists say. A prototype of such a device could detect blood diluted to as little as ...

Snap an image of friends in front of a window curtain and the camera captures the people — and invisible blood stains splattered on the curtain during a murder. Sound unlikely? Chemists from the ...

(Reuters Health) - A screening test for colon cancer that looks for "invisible" blood in stool may also predict a heightened risk of premature death from other causes, a recent study suggests.

Behind many sudden deaths lie clots that block blood flow to the heart, lungs or brain. Globally, blood clots are linked to one in four deaths, which is more than AIDS, breast cancer and traffic ...