Stephanie Pappas

The vast majority of human cases of H5N1 bird flu in the U.S. have resulted from direct contact with animals, so a few simple precautions can keep most people's risk very low.

Active volcanoes were erupting on the far side of the moon 2.8 billion years ago, the first lunar samples returned from the far side reveal.

Current AI models struggle to solve research-level math problems, with the most advanced AI systems we have today solving just 2% of the hundreds of challenges faced.

While investigating a rare developmental disorder, researchers ended up discovering a spectrum of conditions that are all linked to one gene.

A low-pressure system headed for Northern California and Oregon is likely to bring extreme rain and strong winds.

The Lafayette meteorite was discovered in a drawer at Purdue University in 1931, with no clear indication of how it got there. A new analysis of the rock reveals evidence of liquid water on Mars 742 million years ago.

A teenager in Canada is critically ill with the country's first human case of H5N1 bird flu. Health officials aren't sure how the youth was exposed.

The clonal quaking aspen known as Pando is between 16,000 and 80,000 years old.

Hurricane Helene sent gravity waves rippling through the atmosphere far above the southeastern United States, new NASA images reveal.

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought — and may be a big reason that our planet harbors life.