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geochemistry

Three images of two-lobed Arrokoth in varying clarity and color.
Posted inNews

A Sugar Coating for Arrokoth

by Jonathan O’Callaghan 10 July 202410 July 2024

A Kuiper Belt object might contain ribose and glucose on its surface—the same elements that could have seeded life on Earth.

A man holds a clear cylinder that is about 3 feet tall and holds ocean sediment and water.
Posted inNews

Toxic Metal on the Rise in the Baltic Sea

by Amy Mayer 17 June 202417 June 2024

Postwar reconstruction is likely the cause of elevated thallium levels, but low-oxygen, high-sulfide conditions keep the material, which is extremely dangerous to mammalian health, from moving into the human food chain.

在前景中,明亮的蓝白色喷射物从一个弯曲的蓝白色表面散发出来,映衬着星空背景,附近有一个金色的环状行星和两个较小的类似卫星的球体。
Posted inResearch Spotlights

在土卫二上寻找生命:我们应该问些什么问题?

Sarah Stanley, Science Writer by Sarah Stanley 11 June 202411 June 2024

在冰冷的海洋世界中,建立在有机化学进化理论基础上的研究框架,可能会比仅仅寻找生命存在的直接证据,带来更深刻的见解。

A grayish rock with white spots and a brighter brown patch sits on a reflective surface.
Posted inNews

A Splashy Meteorite Was Forged in Multiple Collisions

Damond Benningfield, Science Writer by Damond Benningfield 7 June 20249 June 2024

The Winchcombe meteorite was recovered, largely from a driveway, just hours after it fell to Earth, preserving evidence that its early relatives could have filled Earth’s oceans.

An ice floe floats in the Amundsen Sea close to the shore of West Antarctica.
Posted inFeatures

Confined at Sea at the End of the World

by Sofia Moutinho 23 May 202423 May 2024

Embedded on a research cruise in the Antarctic, a journalist joins a scientists’ “summer camp.”

In the foreground, bright blue-white sprays emanate from a curved, blue-white surface against the starry background of space, with a gold-toned ringed planet and two smaller moonlike orbs nearby.
Posted inResearch Spotlights

Looking for Life on Enceladus: What Questions Should We Ask?

Sarah Stanley, Science Writer by Sarah Stanley 8 May 202411 June 2024

On icy ocean worlds, a research framework built around the theory of organic chemical evolution could surface deeper insights than a hunt limited to direct evidence of life.

A person crouches with an outstretched arm atop a dried lake bed coated with white salt.
Posted inNews

Last Chance Lake Harbors the Highest Known Levels of Phosphate

Katherine Kornei, Science Writer by Katherine Kornei 29 February 202429 February 2024

Bodies of water such as this might have functioned as cradles of life, given their unique biogeochemistry.

2 graphs from the paper.
Posted inEditors' Highlights

Machine Learning for Geochemists Who Don’t Want to Code 

by Paul Asimow 9 February 20249 February 2024

Geochemistry π is an easy-to-use step-by-step interface to carry out common machine learning tasks on geochemical data, including regression, clustering, classification, and dimension-reduction.

A photo of the blue ocean, taken from the shore. Reeds and trees are in the foreground, and a cloudy sky is in the distance.
Posted inResearch Spotlights

Comparing Carbon-Trapping Capacities of Anoxic Basins

by Saima May Sidik 1 February 2024

Low-oxygen regions in the ocean could be prime spots for sequestering biomass—a potential strategy for fighting climate change. But each site has its pros and cons.

A brilliant green mineral juts out from a chunk of blackish rock dotted with other patches of green crystals.
Posted inNews

Olivine May Have Given Life a Jump Start

by Elise Cutts 1 February 20241 February 2024

A mineral common throughout the solar system nudges a reaction that produces sugar molecules from formaldehyde.

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Features from AGU Publications

Research Spotlights

Coherent, Not Chaotic, Migration in the Brahmaputra-Jamuna River

2 July 20252 July 2025
Editors' Highlights

The Mid-20th Century Winter Cooling in the Eastern U.S. Explained

3 July 20253 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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