Four men who had been paralyzed for two years or more were able to move their legs, knees, ankles and toes. After you've injured your spinal cord, getting a "motor complete" diagnosis means you're unable
Embryonic stem cells can become any type of cell, thanks to an ancient virus, scientists say. A virus that invaded the genomes of humanity's ancestors millions of years ago now plays a critical role in
The XStat syringe stops bleeding in 15 seconds using tiny sponges. The pocket-sized XStat, a hemorrhage-stopping invention we wrote about in February, yesterday received approval from the U.S. Food and
Albert Einstein's famous equation E=mc2 for the first time connected the mass of an object with its energy and heralded a new world of physics This is the most famous equation in the history of equations.