Health

A new study found that women in Finland who had a lot of kids—or none—aged faster than those with one or a few kids. But the findings don’t necessarily translate to today’s parents

Children born to mothers who were exposed to smoke in southern California showed increased rates of autism, although the reason why is unclear

Cases of respiratory syncytial virus are increasing, but vaccines and antibody shots can keep young children out of the hospital

The Epstein files revive questions of whether the disgraced financier sought to merely cultivate famous scientists, or to shape science itself

The U.S. has held its measles-free status for more than 25 years. Experts say unrelenting outbreaks in the past year may change that

Motion is the new potion, and rest is no longer the best

Why the EPA’s air pollution rule change could make the air dirtier, how cancer survival hit a record-high, and what we know about the first-ever medical evacuation from the International Space Station

This mysterious type of fat cell may play an important role in heart health, new research shows

This clinical trial in Guinea-Bissau would withhold vaccination from some babies, sparking ethical concerns

Mosquitoes captured in the remnants of the Atlantic Forest in Brazil predominantly feasted on humans instead of other animals, a new study shows

On Thursday NASA chief Jared Isaacman said the experience of the returned Crew-11 will be used to prepare for future human spaceflight—including to the moon

The four members of Crew-11 are on their way back to Earth after one of them became unwell with an unknown condition