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geochemistry

Enceladus’s horizon backlit by the Sun, highlighting several plumes of material coming from the surface.
Posted inNews

Speedy Flyby Adds New Organics to Enceladus’s “Primordial Soup”

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 12 November 202512 November 2025

A new analysis of old Cassini data has also verified past detections of complex organics in Saturn’s E ring, strengthening the chemical ties between the ring and its progenitor.

Close-up image of niobium crystals
Posted inNews

To Find Critical Minerals, Look to Plate Tectonics

by Hannah Richter 21 October 202521 October 2025

A study of “weird” Australian rocks suggests stores of niobium rose to the surface during the breakup of the supercontinent Rodinia.

Illustration of plumes erupting from the surface of Enceladus
Posted inNews

Space Radiation Can Produce Some Organic Molecules Detected on Icy Moons

Javier Barbuzano, Science Writer by Javier Barbuzano 14 October 202514 October 2025

As missions prepare to visit ocean worlds like Enceladus and Europa, new findings show scientists must first learn to distinguish between radiation-made organics and those born in a subsurface sea.

An image of the Milky Way, as seen from the Chilean desert.
Posted inNews

Zircon Crystals Could Reveal Earth’s Path Among the Stars

by Tom Metcalfe 10 October 202510 October 2025

Researchers found signs of melting in zircon crystals in the crust that correspond to our planet’s journey through the galaxy’s spiral arms.

A beach in the Florida Keys
Posted inNews

Shallow Injection Imperfectly Filters Florida Wastewater

by Caroline Hasler 26 September 202526 September 2025

Injection of wastewater into shallow wells is meant to filter nutrients like nitrogen and phosphorus out of the wastewater. But a new study suggests that nutrients aren’t entirely eliminated—and may be polluting coastal waters.

The Perseverance Mars rover, a robot, pictured in front of a red landscape on Mars.
Posted inResearch & Developments

Perseverance Sample Shows Possible Evidence of Ancient Martian Microbial Metabolisms

by Grace van Deelen 10 September 202510 September 2025

A sample collected in July 2024 by NASA’s Perseverance Mars rover may be “the closest we’ve actually come to discovering ancient life on Mars,” according to Nicky Fox, the science head of NASA.

A person in yellow and green protective gear walks past a semi burned house with a mountain backdrop.
Posted inFeatures

When Disaster Science Strikes Close to Home

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 26 August 202526 August 2025

How have scientists across Los Angeles used their skills to help their communities recover from the 2025 fires?

A researcher collects a sample of dust near a structure burned in the Eaton Fire.
Posted inFeatures

Burning Urban and Wild Land Alike

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 26 August 202526 August 2025

When more densely populated Altadena and Pacific Palisades burned along with surrounding wildlands, hazards for residents didn’t stop when the fires were contained.

A light tan world marked with bright white craters from meteor impacts
Posted inNews

Infrared Instruments Could Spot Exotic Ice on Other Worlds

by Matthew R. Francis 19 August 202519 August 2025

Phases of ice that exist naturally only on frozen moons could be detected using infrared spectroscopy, according to new laboratory experiments.

一个清澈的蓝色湖泊位于前景中广阔的干燥土地和背景中高耸的灰色山脉之间,山脉的底部覆盖着常绿的树木。
Posted inResearch Spotlights

地震如何改变湖泊微生物群落

by Rebecca Owen 6 August 20256 August 2025

提示:地震发生后,湖泊的地质、化学和生物成分会重新配置。一项新的研究深入探讨了地震变化对喜马拉雅地区措普湖的影响。

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Features from AGU Publications

Research Spotlights

Lab Setup Mimics Arctic Erosion

14 November 202514 November 2025
Editors' Highlights

Taking Carbon Science Out of Orbit

12 November 202512 November 2025
Editors' Vox

Announcing New AGU Journal Editors-in-Chief Starting in 2026

12 November 202513 November 2025
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