The first study of copycat urination in an animal documents how one chimpanzee peeing prompts others to follow suit. Now researchers are exploring why.

Chemicals in the tooth enamel of Australopithecus suggest the early human ancestors ate very little meat, dining on vegetation instead.

Experts say clinical obesity is more than a high BMI and instead is a disease in which excess body fat harms tissues, organs or doing daily activities.

Logistical needs, like employment and housing, along with psychological needs must be met after disasters like the LA wildfires, research shows.

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

The gyrations of hoop-slinging robots reveal that hourglass-shaped objects are best at keeping a hoop in the air.

The U.S. Food and Drug Administration issued a rule to drastically reduce the amount of nicotine in cigarettes and other combusted tobacco products.

It’s a pivotal moment for nuclear weapons. Tensions between the United States and Russia, the two major nuclear powers, are high. Longstanding nuclear pacts have crumbled. China, which trails ...

Since early 2024, the U.S. has logged 66 human cases of H5N1. Scientists are keeping a watchful eye on the virus’s spread as we enter a new year.