Stephanie Pappas

In recent experiments, rat brain cells filled in for lost neurons in mouse brains, raising new possibilities for growing donor tissues across species.

Every spring, creepy black 'spiders' sprout up on Mars as buried carbon dioxide ice releases dusty geysers of gas. New ESA images show the phenomenon has begun in the strange Inca City formation.

The oldest firm age yet for Earth's magnetic field suggests that it developed before a solid planetary core, 3.7 billion years ago.

The near-Earth asteroid Kamo'oalewa, which orbits alongside our planet as a 'minimoon,' may have originated from Giordano Bruno crater on the far side of the moon, new research suggests.

Researchers suggest that the famed Golconda diamonds, including the Hope Diamond and Koh-i-noor, may have originated from a volcanic outcrop nearly 200 miles from where they were mined.

The volcanic surface of Jupiter's huge moon Io got a stunning close-up thanks to NASA's Juno mission.

A quick flip from El Niño to La Niña is coming soon, but what does that mean for the U.S.?

On many exoplanets, the best clue that life is present may be a purple hue. New research into some of Earth's most extreme bacteria explains why.

Tombaugh Regio — the large, pale heart that dominates Pluto's terrain — is made of nitrogen ice that accumulated after a huge, slow-motion impact, new research suggests.

A large extinction in the midst of the expansion of life during the Cambrian period was caused by the tectonics of a supercontinent, new research argues.

Celebrated theoretical physicist Peter Higgs, best known for predicting the existence of the Higgs boson, has died at the age of 94 after a short illness.

The Parkfield section of the San Andreas fault is sending mixed messages before a time of expected increased seismic risk.

Totality, the moment when the moon completely covers the sun's face, is the climax of a total solar eclipse. Here's what time totality starts in all 13 states where the total solar eclipse will be visible on April 8, and what to expect when the big moment arrives.

A clinical trial of a new method to activate and kill HIV in the body shows small success, but it's not yet a cure.

A simulated form of carbon called BC8, or 'super-diamond', could be 30% tougher than normal diamonds, but synthesizing it on Earth won't be easy.

Record earthquake activity off the coast of Vancouver Island hints at the birth of new oceanic crust.

Wim Hof, known as "The Iceman," purports a combination of breathing exercises and cold exposure has many health benefits. But a new review of studies finds there's limited evidence.

Complex organic molecules spotted by the James Webb Space Telescope may hint at how habitable planets form.

Tall, many-armed star dunes are common in deserts worldwide, but scientists know little about the histories of these formations.

The oldest-known sex chromosome emerged in octopus and squid between 455 million and 248 million years ago — 180 million years earlier than the previous record-holder, scientists have discovered.

The South Atlantic Anomaly makes a section of the southern aurora weaker and likely dimmer.

Researchers say that regardless of whether they qualify as "addictive," dating apps are designed to keep you swiping.

As permafrost melts as a result of climate change, it may release more radon, a colorless, odorless gas linked with lung cancer.

Decimal points are at least 150 years older than historians thought, according to newly unearthed notes from Venetian merchant Giovanni Bianchini, who practiced astrology in the 1440s.

A vital Atlantic current that includes the Gulf Stream and keeps our climate in check may be giving off a warning sign of collapse.