Stephanie Pappas

Remnants of a liquid layer of magma near Earth's core, formed in the first few hundred million years of the planet's history, may still persist today as odd anomalies in the mantle.

You don't need plate tectonics to get continental crust that looks modern, a new study finds.

Huge outpourings of magma accompanied the split between South America and Africa 135 million years ago.

A new view of the Helix Nebula reveals a dying white dwarf star at the nebula's center. This star's violent eating habits could be responsible for strange X-ray emissions in the region.

Measles can erase the immune system's "memory" and cause a rare but fatal health condition. The MMR vaccine prevents these repercussions, evidence shows.

Scientists uncovered a key genetic pathway in the origin of feathers, but they found that evolution is stubborn in turning back the clock.

A study of a woman who died in 2024 as the oldest person on Earth attempts to untangle the factors that enable some people to ward off disease in old age.

Oxytocin, a hormone linked to bonding behaviors, might also help mice modulate their pregnancies. Someday, this line of research could improve our understanding of human fertility.

Mount Spurr near Anchorage has been showing signs of unrest for a year. Now scientists think it's creeping closer to an eruption.

The End-Permian mass extinction killed an estimated 80% of life on Earth, but new research suggests that plants might have done okay.

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

Specific phobias are out-of-proportion fears to objects, animals or situations, and fortunately, they can be treated.

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

A new look at an ancient eruption at Campi Flegrei raises new questions about the propensity of the still-active volcano, located near Naples, to produce major eruptions in the future.

A new computer model suggests that the process of evolution can get better at evolving in the face of environmental change.

NASA will send astronauts Butch Wilmore and Suni Williams home from the International Space Station early on a previously used SpaceX Dragon space capsule, not on a brand-new one, the agency announced.

Ten months of unrest at Mount Spurr could be a sign of an upcoming eruption from a side vent or, less likely, from the main crater.

The telehealth company Hims & Hers put out a Super Bowl ad that skimped on clarifying that its compounded semaglutide medications aren't FDA-approved.

The surface of Earth's inner core appears to be dynamic, changing shape as it rotates, earthquake waves reveal.

Newly discovered Quipu, a superstructure in which galaxies group together in clusters and clusters of clusters, is the largest known structure in the universe in terms of length, scientists claim.