A protein that is a hallmark of Alzheimer’s disease may also ID a brain condition associated with head trauma in contact sports, early findings suggest.

Getting more protein has been all the rage. In sedentary people, that advice could accelerate aging.

Researchers tracked a prescribed grassland fire using infrasound, sound waves pitched too low for people to hear.

Ancient mammals may have had an easier time moving across the Isthmus of Panama from north to south thanks to Mexico’s climate.

Dietary arginine reduces tumor formation and viral load in mice by boosting key immune proteins.

A canopy call, a partial photo and DNA revealed a new primate species — one that may already be at risk of extinction.

Women who received treatment for autoimmune diseases with CAR T cell therapy went on to have regular pregnancies and healthy babies.

Researchers documented behavioral similarities between 11 rehabilitated elephants and their wild counterparts.

Common dolphins in New Zealand are biologically older than their calendar ages. Trace metals and “forever chemicals” may be to blame.

A century of hints has suggested the famed red supergiant had a star pal but seeing it amid Betelgeuse’s brightness has been hard — until now.

Researchers scanned the ears of hundreds of marine mammals to deduce when pinnipeds evolved to hear well in both air and water.

Remains pulled from the La Brea Tar Pits revealed deformed vertebrae and rare tumors, possible signs of inbreeding among now-extinct saber-toothed cats.

The inferno that sent toxic smoke billowing toward the United States won't be the last. Officials are now battling both the wildfires and misinformation.

A chat with aged avatars of future selves can guide people paralyzed by tough decisions. The question is what information to feed the bots.

Scientists have identified four types of black holes, classified mostly by their masses. But these mysterious objects continue to challenge our understanding of the universe.

Prior moon rock samples, including from Apollo, seem heavily influenced by one impact. The farside samples tweak the story.

A few millennia ago, people worldwide may have spoken or signed up to 10 times as many languages as they do today.

This strategy expands orcas’ already broad repertoire for dispatching different types of prey.

The object orbits a brown dwarf that orbits a star, and astronomers aren’t sure if it’s a planet, a moon — or something else entirely.

A new snake’s unique head anatomy suggests early snakes were even more diverse than thought. This one was a rare burrower.