Physicists working at the CERN particle physics lab said they detected a slight but significant difference in how particles of matter and antimatter decay.

The price paid for the juvenile specimen of the 150-million-year old predatory dinosaur is the third-highest on record.

The golden oyster mushroom, a tasty species native to Asia, has proliferated in states around the Great Lakes and may crowd out native species, a new study shows.

The parasitic Tropilaelaps mite, which threatens honeybees and the food supply, isn?t in North America. Yet.

Scientists are trying to understand footage that showed ocelots and opossums, usually predator and prey, hanging out together.

Forget fangs full of venom ? the backsides of serpents pack secretions volatile enough to kill insect invaders.

The Apollo-Soyuz Test Project brought Soviet cosmonauts and NASA astronauts together in the first international human spaceflight.

The planet?s rotation fluctuates as it travels around the sun, and measurements suggest we?re losing more than a millisecond during the long days of summer.

Test your knowledge of taxicab geometry, triangular numbers, the golden ratio and more.

One or more foxes have stolen at least 32 shoes, according to park officials, who warned campers to guard their belongings.

Industry groups said the directive could create new delays and bottlenecks for renewable energy projects across the country.

President Trump also exempted some coal plants, chemical manufacturers and ore processing facilities from pollution rules for two years.

The company was accused of marketing its products to teenagers, causing a surge in use.

Closing Mauna Loa and three other U.S. sites that track greenhouse gases would disrupt a decades-long record of the planet?s changing atmosphere.

Dr. Marty Makary, the agency?s commissioner, said too many women avoid hormone therapy because the risks have been overstated.

Clues from another dry spell 6,000 years ago are helping scientists understand what?s driving the latest one, and why it?s been so unrelenting.

Unlike with opioids, there is no medication to suppress cravings for meth and other stimulants. As use soars, hundreds of clinics are trying a radically different approach.

Staff members who were first notified of terminations in April were finally let go late Monday.

In an about-face, the administration is cracking down on so-called skin substitutes, overused treatments that cost Medicare more than $10 billion last year.

Specialized hospitals, nursing homes, clinics and home health agencies provide rehab therapy. Insurers may limit the services you can get.

For-profit hospitals provide most inpatient physical therapy but tend to have worse readmission rates to general hospitals. Medicare doesn?t tell consumers about troubling inspections.

Gov. Katie Hobbs questioned why the U.S. government decided to manage the Dragon Bravo fire, which started with a lightning strike, as a ?controlled burn? during the height of the summer.

Zackie Achmat, once at the center of South Africa?s push for lifesaving H.I.V. treatment, has come out of retirement as U.S. funding cuts and his own government?s inertia revive old fears.

The resident died from pneumonic plague, the first such death in Coconino County, Ariz., since 2007, the county said.

He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of matter predicted by Albert Einstein.

Scholars and designers of early warning systems say that there are still huge gaps in our ability to predict flash floods and warn those at risk.

The fossil, estimated to be about 70 million years old, was found during a drilling project.

Ben Jealous, who joined the environmental group in 2023, has clashed with some employees and the organization?s union.

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