Is the Future of Medicine Hidden in Ancient DNA?

Genetic fragments from thousands of years ago are providing insights into illnesses such as multiple sclerosis and diabetes.

 By Sabrina Tavernise, Carl Zimmer, Alex Stern, Jessica Cheung, Shannon Lin, Carlos Prieto, M.J. Davis Lin, Marc Georges, Chelsea Daniel, Dan Powell and

New Report Raises Concerns About Long Covid in Children

The condition is less prevalent among children than adults, but symptoms can disrupt their schoolwork and social lives.

 By Dana G. Smith and

After Years of Decline, Premature Births Rose in the U.S.

The reason behind the rise isn’t clear, but experts say maternal health may offer some clues.

 By

One Arm or Two? How You Get Vaccinated May Make a Difference.

Receiving multidose vaccinations in both arms, instead of just one, may increase the immune response, new research suggests.

 By