The BepiColombo spacecraft flew less than 200 miles from Mercury's surface and photographed volcanic plains and icy craters.

As fire crews and air tankers work to block the wildfires' explosive growth, images of red clouds of fire retardant falling onto trees are common. What is it — and what's in it?

Exposure to wildfire smoke is a growing health problem across the U.S., as climate change increases the risk and intensity of wildfires.

Southern states don't often deal with winter conditions, but New England does. New Hampshire especially has tips for how to prepare for a winter storm.

A new study on mice shows that luck in early life can determine success as an adult, especially when competition is high.

NASA has announced it is moving forward with several plans to return rock samples from Mars.

New Glenn, developed by the private space firm founded by billionaire Jeff Bezos, is on the pad at Cape Canaveral, Fla., and could launch on its maiden flight as early as Friday.

The two giant pandas were seen on camera playing around in the snowfall that blanketed much of the Midwest and mid-Atlantic on Monday.

In zebrafish, ketamine causes changes a brain circuit involved in "giving up." That may help explain how the drug helps people with depression.

A dolphin rescue center said most of the dead dolphins were from the endangered Azov species.

In order to better understand her circadian rhythm, science journalist Lynne Peeples conducted an experiment in which lived for 10 days in a bunker, with no exposure to sunlight or clocks.

President Joe Biden is moving to ban new offshore oil and gas drilling in most U.S. coastal waters, an effort to block possible action by the incoming Trump administration to expand offshore drilling.

In one Indian town, monkeys will steal your glasses — and give them back if you toss them a container of mango juice. It's one more sign of the impact of urbanization on the wild.

The 166-million-year-old footprint tracks, found at a quarry in southern England, mark one of the largest discoveries in decades.

Migrating hundreds and hundreds of miles is hard work for the common noctule bat. But this European species makes its marathon journey a little bit easier by paying attention to the weather.