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Another round of powerful atmospheric rivers is hitting California, following storms in January and February 2023 that dumped record amounts of snow. This time, the storms are warmer, and they are triggering flood warnings as they bring rain higher into the mountains – on top of the snowpack. Professor Keith Musselman, who studies water and climate change at the University of Colorado’s Institute of Arctic and Alpine Research, explained the complex risks rain on snow creates and how they might change in a warming climate.

Mormons used the plant to make a caffeine-free hot drink, and Native Americans used it to relieve congestion.

Aspen boletes build physical connections for mutualistic exchanges with quaking aspen.

Scientists explain why wildfires are happening, why we can't put out every fire and how to move forward in an ever-changing climate.

Ancient eggshells remained unidentified until AI directed researchers toward an answer.

The common wood nymph tastes with its feet and hears with its wings.

After interviewing hundreds of participants, our survey shows support for Nato is at an all-time high.

The beautiful male emerged in October, eager to mate but destined for disappointment because he emerged too late in the season, just an example of natural selection at work I received an invitation to photograph a black swallowtail butterfly that had just emerged. It would linger only a short while...

Homes that survived the Marshall Fire harbored another disaster inside – here’s what we’ve learned about this insidious urban wildfire risk.

Marine concrete from the Roman empire has proven to stand the test of time—and offers insights into ways to combat rising sea levels now.