Uncertainty in climate models could mean Earth systems are perilously close to their tipping points, scientists warn.

A modeling study shows how warm subtropical waters and cold Antarctic waters combine to form an Indo-Pacific water mass that plays a key role in Earth’s climate. Prior research has suggested ...

Aftermath of a landslide near Tatopani, Nepal, triggered by a July 2016 glacial lake outburst flood. Credit: Christoff Andermann A wall of water, not an earthquake, set the ground shaking in eastern ...

The planets of the TRAPPIST-1 system, several of which appear in this illustration, may all be tidally locked to their host star. Credit: European Southern Observatory/M. Kornmesser In the past 20 ...

Two observers in southeast Alaska log monitoring data. Credit: Lee House, NOAA’s Arctic Report Card 2025 NOAA released this year’s Arctic Report Card on 16 December at AGU’s Annual Meeting 2025 in New ...

Wildfires dot Russia’s Siberian Arctic, imaged by the Terra satellite in June 2020. Such fires are becoming significantly more common in the region. Credit: Pierre Markuse via Flickr, CC BY 2.0 ...

Thunderstorms, produced when air rises through the depth of the troposphere, are notoriously difficult to represent in global climate models. Whether air parcels have the energy to rise or not does ...

Crevasses cover the surface of Store Glacier in the western Greenland Ice Sheet. Credit: Tom Chudley, Durham University Crevasses in the Greenland Ice Sheet are expanding faster than previously ...

If humans want to live in space, whether on spacecraft or the surface of Mars, one of the first problems to solve is that of water for drinking, hygiene, and life-sustaining plants. Even bringing ...

Fair peer review is a necessity for research across all scientific disciplines. Thousands of experts volunteer their time each year to advance scientific understanding and provide feedback to their ...

Equatorial plasma bubbles (EPBs) are a crucial space weather phenomenon, originating in the post-sunset hours, which adversely affect satellite-based communication and navigation systems, and high ...

Stable auroral red (SAR) arcs and strong thermal emission velocity enhancement (STEVE) phenomena are optical structures that have been detected in the subauroral upper atmosphere. Whereas aurorae are ...