A strange comet-like object discovered over five years ago was the first known visitor from another solar system. Its movement was so odd that scientists struggled to explain it, until now.

Scientists have sequenced the genome of Ludwig van Beethoven from two-century-old locks of hair, and found clues about the ailments that plagued him in life.

Mora Leeb was 9 months old when surgeons removed half her brain. Now 15, she plays soccer and tells jokes. Scientists say Mora is an extreme example of a process known as brain plasticity.

A professor lends worms to students, takes them to sewage processing plants and encourages them to answer their own questions about garbage. Sometimes, they even make a career out of it.

Russia is using a dam it controls to release water from Ukraine's massive Kakhovka Reservoir. It's one of dozens of cases where the war is limiting access to safe water.

GOOD Meat, which grows chicken and other meat from animal cells in a production facility, is the second company to cross this hurdle. The move brings no-kill meat closer to sale in the U.S.

It's significant, according to officials with the Houston Zoo, because the radiated tortoise is a critically endangered species whose numbers are in decline.

If you're in your 20s, 30s or 40s, you need to know the signs to watch for and when to seek screening or treatment for colorectal cancer.

Data was released briefly, then rescinded. As NPR reported previously, there is already strong evidence pointing to these animals in the Huanan Seafood Wholesale Market in Wuhan.

Data from an old NASA spacecraft reveals a volcano erupted on the surface of Venus in 1991, a new study in Science says.

A Mississippi woman's life has been transformed by a treatment for sickle cell disease with the gene-editing technique CRISPR. All her symptoms from a disease once thought incurable have disappeared.

One in five Sierra Nevada conifers are no longer compatible with the environmental conditions around them, raising questions about how to manage the land. Researchers say it may get worse.

What's the risk of contracting a surprising virus from Fido or Kitty? It's not a frivolous question, as one virologist explains. And there's another question: Can you give a virus to your pet?

The rates of premature birth in the U.S. are high, especially in certain states. Experts worry that states restricting abortion have fewer maternal care providers than those with abortion access.

Law enforcement organizations are promoting a new film about children being exploited into sharing sexual images and videos. But many of the film's key claims lack context.