Anti-doping agencies are tracking levels of various molecules in athletes’ blood and urine over time to increase their ability to detect drug misuse.

A better understanding of the genetic diversity among humans could motivate an appreciation of both our similarities and our differences.

Meet some of the people featured in the September 2019 issue of The Scientist.

Anti-doping organizations are constantly developing new tests to catch athletes trying to boost their performance in increasingly sophisticated ways.

Despite a solid understanding of the biological basis of fragile X syndrome, researchers have struggled to develop effective treatments.

Many preclinical studies carried out in vivo are poorly designed and generate irreproducible data, but efforts to address the problem are on the rise.

From skin color to immunity, human biology is linked to our archaic ancestry.

A case study of a family demonstrates that different genetic mutations from the two parents cause severe heart disease symptoms in the children.

The astronomical idea doesn’t align well with the fossil record, anthropologists argue, but the origins of bipedalism are still difficult to determine.