Even if you think you learned everything that you needed to know way back in biology class, everyone has knowledge gaps. And often you’re not even aware that they exist. There are tons of things we ...

While the human body doesn’t replace itself every seven years in a uniform way, it does engage in constant renewal.

Exclusive: Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’ ...

Share on Pinterest The human body experiences rapid changes around age 50, according to a new study. Maskot/Getty Images Past studies show that human aging doesn’t necessarily happen at the same pace ...