For decades, the idea of people living on Mars has felt like a distant fantasy, limited by the brutal cost of hauling ...

Nearly 1.5 million Americans and nearly 5% of women over the age of 55 have rheumatoid arthritis (RA), an incurable ...

Flexibility is the ability of your joints to move through their full range of motion without pain or stiffness. It also refers to the pliability of the muscles that support the joints. Flexible ...