A thousand feet beneath the desert, the United States conducts experiments to verify that its weapons work. But some fear a live test could come soon.

The fossil was found at a cliff in Denmark. Fossilized vomit is called regurgitalite, and it's a type of trace fossil, which tells scientists about an organism's daily life.

Extreme conditions helped fuel the fast-moving fires that destroyed thousands of homes. Scientists are working to figure out how climate change played a role in the disaster.

Acting EPA Administrator James Payne sent an email to members of the agency's Science Advisory Board and the Clean Air Scientific Advisory Committee informing them that both are being "reset."

Two NASA astronauts flew to the International Space Station in June on Boeing's Starliner capsule. The test flight was planned for eight days but technical troubles forced the capsule to return empty.

Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two possible explanations — and hopes to get confirmation in the coming months.

The National Science Foundation has canceled all grant review panels this week. It's unclear how long the pause could last.

The female rhesus macaques staged an escape from the Alpha Genesis Primate Research Center in South Carolina last year.

A Trump executive order temporarily pauses leases and permits for offshore and onshore wind projects. Wind advocates say an offshore wind freeze could threaten states' climate goals and jobs.

In northern California, a group of volunteers spend every night from late fall through winter as crossing guards–escorting migrating salamanders across a rural road. 

The U.S. claims the hacking was commissioned by a lobbying firm working on behalf of one of the world's biggest oil companies.

Friday's debut of new pandas at the National Zoo in D.C. is the latest chapter in a long tale of "panda diplomacy" between China and the rest of the world.

Climate scientist Ben Hamlington works on understanding the impacts of climate change. Losing his house in the Eaton Fire has given that work new meaning.

January has been one of the best for star-gazing and one of the most spectacular celestial displays of planetary magic is coming up on Saturday, Jan. 25.

When military personnel fire certain powerful weapons, they may be exposed to blast waves that damage blood vessels in the brain.