University of Pennsylvania swimmer Lia Thomas is only the most recent and most visible example of biological men competing and winning against female athletes, with examples now dating back several ...

For more than a century, scientists have wondered why physical structures like blood vessels, neurons, tree branches, and ...

Believe it or not, your chronological age (the amount of years you’ve been on earth) and your biological age are two very different things. Put simply: Even if two people are 45 years old, they are ...

Scientists say the technology is still too new to tell you much about yourself unless you also see a doctor. Ads for biological age tests that promise to tell you if you have the body of somebody ...

The potential reach of the state into our individual biology and genetic makeup is expanding at an unprecedented rate. Global responses to the COVID-19 pandemic have crystallized just how quickly and ...

A 3D graphic showing an artist's interpretation of human X and Y chromosomes. On the left are blue bundles of genetic material making an X shape and on the right blue bundles of genetic material ...