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.

Land managers in the western United States are using potential operational delineations, or PODS, to prepare for — and take advantage of — wildfires.

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.

Should people be worried? Pasteurization and the H5N1 virus’s route to infection suggests risks to people remains low.

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

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

Ocean warming enhances hurricane activity, bleaches coral reefs and melts Antarctic sea ice. That warming has been off the charts for the past year.

Over time, bone marrow stem cells develop key genetic errors and pass them on to immune cells. This may increase the risk of developing heart disease.