New research shows lifelong bikers have healthier knees, less pain and a longer lifespan, compared to people who've never biked. This adds to the evidence that cycling promotes healthy aging.

Archaeologists have discovered evidence of a rare type of skull surgery dating back to the Bronze Age that's similar to a procedure still being used today.

An experiment involving some "mighty mice" on the International Space Station could someday help astronauts maintain muscle and bone strength on interplanetary journeys.