Science

Patients at a Boston primary care practice talked with a Google medical chatbot before real urgent appointments, and not one of those conversations had to be stopped on safety grounds, according to a…

The National Institute of Standards and Technology reported Oct. 8, 2026, that the number of substances mixed into illicit fentanyl in the United States is rising, and that what gets added differs…

Larger dogs and male dogs, both of them shorter-lived, also age faster by a chemical measure read off their DNA. Researchers at Arizona State University, working with the Dog Aging Project, report…

For decades, the story of how a cattle pregnancy survives its first three weeks has had one hero. The embryo, by then a flat sheet of cells stretching itself along the inside of the uterus, pours out…

Researchers at the University of Washington have reconstructed the family tree of 1.28 million cells from a single mouse embryo, tracing each of them back to the fertilized egg the animal started as.…

Nicotinamide riboside, a supplement sold over the counter to raise the body's levels of a cell chemical called NAD, did not slow early Parkinson disease in a year-long trial published on Oct. 8,…

Two research groups have turned a transition inside the thorium-229 nucleus into the frequency reference of a working clock, each reporting it in Nature on Oct. 7, 2026. Both locked a steadily…

Chemists at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany, have measured a chemical bond in a compound of seaborgium, element 106, and found it weaker than the same bond one…

A fossil from the Middle Jurassic of China has been described with its throat intact: the bony roof of the passage and the small bones that sit inside it, parts that almost never survive in an animal…

Stanford University researchers report that the Tsimane of Bolivia and the Hadza of Tanzania, two Indigenous peoples living on different continents, share 1,231 species of gut bacteria. Genetic…

The animal is 322 millimeters long, dried to a yellow-beige, and it has sat in a cabinet in southern Germany since the late 1980s. For most of that time it carried a name: Bathynomus giganteus, the…

A research group at Sichuan University has built an RNA imaging system for plants in which the fluorescent probe is destroyed unless it is bound to its target, and used it to follow single messenger…