Stephanie Pappas

Kids can get monkeypox, but the risk is low. Should parents worry about monkeypox spreading in schools, and will children need a monkeypox vaccine?

The brain stores memories by creating new circuits of communication between neurons. In particular, seahorse-shaped structures called hippocampi play an important role.

The oldest three-dimensional green algae fossil ever found dates back more than half a billion years and may reveal that plants are older than believed.

Coastal Alaska is recovering after a weekend of brutal flooding caused by the remnants of Typhoon Merbok.

A never-to-be-seen-again view of Comet Leonard took top prize at the Royal Observatory Greenwich's Astronomy Photographer of the Year contest.

A unique protein found only in tardigrades explains why these tiny animals can dry out completely and survive.

Water driven toward Earth's center by plate tectonics could lead to the creation of diamonds at the boundary between the core and the mantle.

While surviving a mass extinction, strange tusked animals called lystrosaurs may have faced repeated drought, "mummy" fossils suggest.

PFAS chemicals, known as "forever chemicals" because they don't break down in nature, can be beheaded with a simple, inexpensive method.

A document thought to have been handwritten by Galileo Galilei is in fact a 20th-century fake.

Stunning new images of Jupiter from the James Webb telescope show the planet's auroras and hazy clouds.

An ancient piece of crust is hiding below Western Australia, having survived 4 billion years of upheaval.

Orcas are snapping the rudders off boats near Europe, and it may be a cetacean fad.

Authorities have linked the discovery of a foot inside a shoe to a previously unreported death in Yellowstone National Park on July 31.

Protons can contain a charm quark, an elementary particle 1.5 times heavier than the proton itself.

Archaeologists have found one Stone Age and 140 early medieval graves filled with artifacts in Germany.

A child in Nebraska has died of a likely infection with Naegleria fowleri, popularly known as a brain-eating amoeba.

A 66 million-year-old impact crater has been discovered off the coast of West Africa, raising questions about just how many deadly space rocks the dinosaurs had to deal with.

The icy shell of Jupiter's moon Europa may be formed by extremely pure underwater snow.

For the first time, authorities have given a heat wave a name. Scientists hope that naming extreme heat events will help the public protect itself.

Some asteroids are surrounded by swarms of pebbles. A new study reveals why.

A loud explosion heard Saturday (Aug. 13) in Utah may have been an exploding Perseid meteor.

An armored dinosaur that weighed as much as a housecat has been discovered in South America. Though it resembles a primitive relative of ankylosaurus, it came from late in dinosaur history.