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Oceans

Underwater photo of smoke erupting from the sea floor.
Posted inEditors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

by Laurence A. Coogan, Alexandra V. Turchyn, Ann G. Dunlea and Wolfgang Bach 3 December 20253 December 2025

From a gathering of scientists at a uniquely well-preserved section of ancient oceanic crust came a monograph investigating the latest in hydrothermal fluxes and seawater chemistry.

Aialik Glacier makes a big splash as it calves into the water at Alaska’s Kenai Fjords National Park.
Posted inNews

Glacier Runoff Becomes Less Nutritious as Glaciers Retreat

Javier Barbuzano, Science Writer by Javier Barbuzano 25 November 202525 November 2025

Sediment from retreating, land-terminating glaciers contains proportionally fewer micronutrients such as iron and manganese, reducing the glaciers’ value to microorganisms at the base of the food web.

Aerial photo of San Francisco Bay.
Posted inEditors' Vox

Echoes From the Past: How Land Reclamation Slowly Modifies Coastal Environments

by Bas van Maren 19 November 202519 November 2025

Reclamation of tide-influenced areas has a large impact on coastal environments through gradual modification of tidal dynamics, erosion, and siltation.

A man sits on the balcony of a flooded building along the banks of an overflowing river.
Posted inResearch Spotlights

A New Way for Coastal Planners to Explore the Costs of Rising Seas

by Saima May Sidik 18 November 202518 November 2025

A framework featuring a range of plausible future sea level rise scenarios could help coastal planners prepare critical infrastructure for the worst-case scenario.

World map with ocean temperature patterns and labeling indicating the Indo-Pacific Warm Pool
Posted inNews

Ocean Tunneling May Have Set Off an Ancient Pacific Cooldown

by Larissa G. Capella 18 November 202518 November 2025

The ocean’s depths cooled off about 1.5 million years ago, and scientists think watery tunnels from the south may be to blame.

A drone image of a piece of mountainous land jutting out into the blue ocean.
Posted inResearch Spotlights

How Algae Helped Some Life Outlast Extinction

by Rebecca Owen 13 November 202513 November 2025

Cooler waters near Norway’s north provided a refuge for phytoplankton during the Great Dying, a new study suggests.

太阳从海面升起。紫色的云朵在天空中飘荡。
Posted inResearch Spotlights

古气候模式为未来变暖提供线索

by Rebecca Owen 6 November 20256 November 2025

一项新研究分析了过去1000万年的海洋表面温度数据,以预测未来变暖的可能走向。

Satellite image of Antarctica
Posted inNews

Satellite Data Reveal Changing Lakes Under Antarctic Ice

Katherine Kornei, Science Writer by Katherine Kornei 4 November 20254 November 2025

Radar altimetry observations have pinpointed 85 active subglacial lakes, shedding light on how water moves beneath the Antarctic Ice Sheet.

Against a gray background, strands of multicellular green organisms glow in artificial light.
Posted inNews

Marine Heat Waves Slow the Ocean’s Carbon Flow

by Mack Baysinger 3 November 20253 November 2025

When plankton find themselves in hot water, organic matters stalls at the surface and disrupts transport of carbon to the deep ocean.

A sequence of six images shows cylindrical chunks of ice melting, changing shape, and flipping over.
Posted inNews

Melting Cylinders of Ice Reveal an Iceberg’s Tipping Point

by Matthew R. Francis 23 October 202523 October 2025

New lab experiments on cylinders of pure ice shed light on how icebergs flip over as they melt, demonstrating the link between a warming ocean and small-scale events that can have rippling consequences.

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Features from AGU Publications

Research Spotlights

Marine Heat Waves Can Exacerbate Heat and Humidity over Land

2 January 20262 January 2026
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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