Nell Greenfieldboyce

A story from the journal Science suggests that the only "wild" horses in existence aren't actually wild at all but rather are the feral descendants of an early domestication.

Private company SpaceX on Tuesday is set to launch the world's most powerful rocket — the Falcon Heavy. This is a test launch that will carry a cherry red Tesla roadster into orbit around Mars.

The company is getting ready for the first flight of its massive Falcon Heavy. It will be the most powerful rocket in use — if it doesn't blow up.

Given a choice, bonobos tend to prefer people who act like jerks and dominate. That's very different than humans, who even as infants consistently prefer people who are cooperative and not mean.

A giant whale eye spent decades on a strange journey before it finally arrived at an animal eyeball lab and gave the folks there the "best Christmas ever."

After an unusual three-year moratorium, the federal government says it will once again allow research on deadly viruses that could spark pandemics. The work has sparked concerns about bioterrorism.

After being caught in a net, narwhals appear to get confused about what to do. Researchers say the whales' befuddlement could provide clues about how they will adapt to a changing Arctic.

Senators are about to get their chance to grill the nominee for head of the National Oceanic and Atmospheric Administration. Critics say he has a conflict of interest.

Billions of these birds once flew over North America, but the last known passenger pigeon died in 1914. To try to figure out what happened, scientists analyzed DNA from the toes of birds in museums.

Researchers used equipment that detects muons. Measuring the density of the tiny particles yielded an image of what's behind the pyramid walls with no damage to the ancient structure.

President Trump's pick for the next head of NASA, Rep. Jim Bridenstine, R-Okla., will have his Senate nomination hearing on Wednesday. He's been controversial because of his views on climate change.

That's the conclusion of a study performed as Washington, D.C., rolled out its huge program. The city has one of the largest forces in the country, with some 2,600 officers now wearing cameras.

Enhancing a research monkey's life by housing it with a pal often doesn't hurt the study, says a researcher who's done it. In her own experience, she says, "it actually helped to improve the science."

In an astonishing discovery, astronomers used gravitational waves to locate two neutron stars smashing together. The collision created 200 Earth masses of pure gold, along with other elements.

Researchers are startled to find that pumas, also called mountain lions, meet up quite frequently with their fellow big cats — perhaps to share an elk carcass.

A new study of how birds react to the annual light tribute to September 11th in New York City provides compelling evidence for how artificial light can disorient large numbers of migrating birds.

They were honored for developing a new way to generate 3-D images of biological molecules. Researchers are using the technique to study everything from the Zika virus to Alzheimer's disease.

The 2017 Nobel Prize in chemistry has been awarded to researchers Jacques Dubochet, Joachim Frank and Richard Henderson for their work to develop cryo-electron microscopy.

A neurobiologist noticed something strange whenever he tried to fish out electric eels in his lab using a net with a metal rim and handle. So he decided to roll up his sleeves and investigate.

A small number of passionate "shadow lovers" roam the world to be at exactly the right place when the moon blots out the sun. One man has seen 33 — and calls each "one of the top events of my life."