Why are men over 50 around the world 60% more likely than women to die early? Two big reasons are higher rates of smoking and heart disease, according to a large new study. The findings are based on an analysis of data from more than 179,000 people in 28 countries. Fifty-five percent were women. Researchers…  read on >  read on >

Humans sweat more and move more than chimpanzees and other apes, but new research shows people are actually more water-efficient than their primate cousins. For the first time, scientists say they measured precisely how much water humans lose and replace each day compared with their closest living animal relatives. The investigators found that the human…  read on >  read on >