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Oceans

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 20255 January 2026

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.

A wave rises on the ocean surface, and a cloud floats in a blue sky.
Posted inResearch Spotlights

The Southern Ocean May Be Building Up a Massive Burp

Sarah Derouin, Science Writer by Sarah Derouin 20 October 202520 October 2025

Modeled results suggest that if anthropogenic emissions decrease and the atmosphere cools, heat stored in the Southern Ocean could be released abruptly in a few hundred years, kicking off a temporary warming period.

Close-up image of a turquoise breaking wave
Posted inNews

Scientists Tune In to the Ocean’s Sound Waves

by Andrew Chapman 16 October 202516 October 2025

A new technique detects inaudible acoustic signals from crashing waves, opening up possibilities for monitoring sea and atmospheric conditions from shore.

A man crouches on the deck of a ship. He is wearing latex gloves and collecting a water sample from a tank.
Posted inNews

Panama’s Coastal Waters Missed Their Annual Cooldown This Year

by Katherine Bourzac 15 October 202515 October 2025

The unprecedented failure of tropical upwelling will likely affect the country’s fisheries. Scientists aren’t certain whether it will happen again next year.

An underwater reef.
Posted inNews

As Seas Rise, Corals Can’t Keep Up

by Grace van Deelen 14 October 20251 January 2026

Coral reef growth rates in the tropical western Atlantic have slowed to a fraction of what they once were, erasing coastal protection benefits they once offered.

Research scientist Kelly Hondula gathers water samples from submarine groundwater discharge sites along the Hawaiian coast.
Posted inNews

Pinpointing Sewage Seeps in Hawaii

by Anna Napolitano 9 October 20259 October 2025

Cesspools and septic systems, as well as coastal development, put Hawaiian coastal waters at risk of contamination.

A satellite image shows a swirl of clouds off the western coast of the United States.
Posted inResearch Spotlights

A Step Toward AI Modeling of the Whole Earth System

by Saima May Sidik 9 October 20259 October 2025

Coupling an AI-driven model of the atmosphere with a model of the ocean could help scientists create highly efficient emulations of the entire Earth system.

Hielo marino agrietado visto desde arriba.
Posted inNews

La salinidad del Océano Austral podría estar desencadenando la pérdida de hielo marino

by Bill Morris 9 October 20259 October 2025

Nuevas tecnologías satelitales han revelado que el Océano Austral se está volviendo más salino, un giro inesperado de los eventos que podría representar un gran problema para la Antártida.

Neil Jacobs sits behind a microphone, speaking at his confirmation hearing.
Posted inResearch & Developments

Sharpiegate Scientist Takes the Helm at NOAA

by Emily Gardner 8 October 20258 October 2025

Meteorologist and atmospheric scientist Neil Jacobs was confirmed as the new leader of NOAA on Tuesday evening.

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Features from AGU Publications

Research Spotlights

How a Move to the Shallows 300,000 Years Ago Drove a Phytoplankton Bloom

5 January 20265 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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