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

Wetlands are vital natural assets, capable of taking up atmospheric carbon and restricting subsequent carbon loss to facilitate long-term storage. They can be deliberately managed to provide a natural ...

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 ...

The Moon’s farside is heavily cratered and mostly lacks the dark volcanic basins of the familiar nearside. The South Pole–Aitken basin, the oldest and largest crater on the Moon, is the large dark ...

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 ...

Researchers collected sediment cores near the Ebro delta to trace decades of microplastics trapped on the seafloor. Credit: Lena Heins The world produces about 380 million metric tons of plastic ...

Geographic information system (GIS) maps help researchers, policymakers, and community members see how environmental risks are spread throughout a given region. These types of interactive, layered ...

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 ...

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 ...

Scientists collected sediment cores from the Southern Ocean to gather evidence for the existence of a “salty blob” that sequestered carbon deep in the ocean during the last ice age. Credit: Ryan ...

The current situation on the Birch Glacier at Blatten. Note the rockslide in the background, the huge volume of debris on the ice at the bottom of this slope, the ice of the glacier itself and the ...

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 ...