Our findings suggest that to maintain good physical health related quality of life at around age 70, 1 may be able to make up for not being active earlier by becoming active in the mid-50s. The aim to ...

The F-16 Fighting Falcon was born as a nimble, affordable dogfighter. -Five decades later, it’s still on flight lines worldwide because it keeps evolving. -Its fly-by-wire agility and pilot-centric ...