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geochemistry

Yellow light shines through a layer of clouds onto the ocean below. A volcano is visible, in silhouette, in the distance.
Posted inNews

A Peculiar Polymer Paired with Sunlight Could Remove PFAS

by Emily Gardner 7 April 20267 April 2026

A new photocatalyst might help take the “forever” out of “forever chemicals” present in water.

Aerial view of an Atacama lithium mine shows three clusters of large rectangular evaporation ponds in shades of blue, teal, and pink scattered across a gray salt flat.
Posted inNews

Engineering a Cleaner Way to Extract Lithium

by Andrew Chapman 4 March 20264 March 2026

The new chemical solvent technique could cut water use, speed extraction, and unlock reserves like California’s Salton Sea.

Photo of the surface of Mars.
Posted inEditors' Vox

A Double-Edged Sword: The Global Oxychlorine Cycle on Mars

by Kaushik Mitra 10 February 202610 February 2026

Global detections of oxychlorine salts reveal a complex, 4-billion-year chemical cycle on Mars. They can act as de-icing agents, oxidants, a hazard and a vital resource for future human exploration.

The back deck of a boat as it moves through the ocean.
Posted inNews

The AMOC of the Ice Age Was Warmer Than Once Thought

by Grace van Deelen 10 February 202610 February 2026

An analysis of sediment cores indicates that North Atlantic waters were relatively warm and continued to circulate even under major climate stress during the Last Glacial Maximum.

A lake, seen from a rock on the shore, is mostly covered in ice but beginning to melt. The melting water is purple. On the other side of the lake, a rocky cliffside with evergreen trees is visible beneath a blue sky.
Posted inResearch Spotlights

How the Spring Thaw Influences Arsenic Levels in Lakes

by Saima May Sidik 6 February 20266 February 2026

Four lakes near Yellowknife, Canada, show that there’s no one-size-fits-all answer.

Composite image of the farside of the Moon, a gray surface heavily marked with craters.
Posted inNews

Primordial Impact May Explain Why the Moon Is Asymmetrical

by Matthew R. Francis 6 February 20266 February 2026

Analysis of surface samples from the Chang’e-6 mission suggests that an asteroid may have vaporized parts of the lunar mantle, suppressing volcanic activity on the farside of the Moon.

A production plant, consisting of many series of pipes stretching every which way and up into the sky, stretches off into the horizon.
Posted inNews

Meet the Mysterious Electrides

by Rachel Brazil 5 February 20265 February 2026

These chemical oddities may explain why Earth seems to be deficient in certain elements—and could prove useful in catalysts and more.

A black-and-white image shows the ends of dozens of soil cores, stored in a wall. A few of the slots are empty.
Posted inNews

How the Rise of a Salty Blob Led to the Fall of the Last Ice Age

by Emily Gardner 2 February 20262 March 2026

Scientists have long suspected that high salinity levels in the deep ocean were responsible for keeping carbon dioxide locked away during the last ice age. New research finds the strongest evidence yet.

A wave crashes onto a dark, rocky shore. Green rolling hills are in the distance.
Posted inResearch Spotlights

Our Ocean’s “Natural Antacids” Act Faster Than We Thought

Sarah Stanley, Science Writer by Sarah Stanley 30 January 202630 January 2026

New evidence from New Zealand suggests that calcium carbonate dissolution occurs not just over millennial timescales, but over annual and decadal ones too.

The aftermath of a quick clay landslide in Gjerdrum, Norway, in 2020.
Posted inNews

Insights for Making Quick Clay Landslides Less Quick

by Nathaniel Scharping 29 January 20262 March 2026

In a quick clay landslide, solid soil liquefies suddenly, sometimes washing over entire towns. New modeling examines what kinds of salts could help stabilize these clays.

Posts pagination

1 2 3 … 25 Older posts
Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

Glaciers May Flow into the Ocean More Quickly Than We Think

14 April 202614 April 2026
Editors' Highlights

Machine Learning Can Improve the Use of Atmospheric Observations in the Tropics 

14 April 20267 April 2026
Editors' Vox

Synergistic Integration of Flood Inundation Modeling Methods

10 April 202610 April 2026
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