The discovery of sympathetic nervous system cells in lampreys draws a closer tie between the animal and complex vertebrates — such as humans.

Experiments in mini greenhouses show how the tiny organisms lurking underground in a "sleepy biome" could be a contributor to climate change.

Little is known of how teens learn about emotions online and then use that knowledge to cope with social uncertainty during in-person encounters.

Researchers have created a visual encyclopedia of the different expressions that belugas ( Delphinapterus leucas) in captivity seem to make with their highly mobile “melon,” a squishy deposit of fat ...

Growing out patches of grass can lure adult butterflies and moths with nectar and offer lawn mower–free havens for toddler caterpillars.

Rakus the orangutan appeared to be treating a cut to his face with a plant that’s also used in traditional human medicine.

Ultrathin goldene sheets could reduce the amount of gold needed for electronics and certain chemical reactions.

A survey of college students reported many are comfortable calling emergency services for an overdose, but fewer know how to intervene with naloxone.

The detection of cool plasma before the tiny outbursts on the sun is helping researchers make connections between campfire flares and other solar eruptions.

On June 4, 2021, amid flowering saguaros and prickly pear cacti, a wildfire bloomed in the Sonoran Desert in central Arizona. Its nascent flames gorged on nonnative grasses desiccated by a long ...

In 1998, at the age of 22, conservation biologist Ximena Velez-Liendo came face-to-face with South America’s largest carnivore on her first day of field research in Bolivia. Her life changed ...