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paleoclimatology & paleoceanography

An image of Earth from the International Space Station shows clouds floating over the ocean, with the darkness of space in the background.
Posted inNews

Earth System Engineers Take Planetary Alterations to Extreme Scales

by Grace van Deelen 29 October 202529 October 2025

A new framework argues Earth scientists should employ the concept of ecosystem engineering across geologic time and space.

A researcher in a hard hat sits in a backlit cave with a small metal instrument.
Posted inNews

Major Droughts Coincided with Classic Maya Collapse

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 24 September 202524 September 2025

Understanding how individual cities responded to climate stress will help create holistic pictures of how these societies functioned.

The Sun rises over the ocean. Purple clouds are in the sky above.
Posted inResearch Spotlights

Paleoclimate Patterns Offer Hints About Future Warming

by Rebecca Owen 15 September 202515 September 2025

A new study examines 10 million years of sea surface temperature data to offer predictions about how future warming may unfold.

A large iceberg floats in blue Arctic Ocean water.
Posted inNews

Arctic Ice Shelf Theory Challenged by Ancient Algae

by Andrew Chapman 13 August 202513 August 2025

Chemical signatures of marine organisms reveal that seasonal sea ice, not a massive ice shelf, persisted in the southern Arctic Ocean for 750,000 years.

Imagen de tomografía computarizada en blanco y negro de un núcleo de coral.
Posted inScience Updates

Un repositorio de núcleos de coral diseñado para la transparencia y accesibilidad

by Avi Strange, Oliwia Jasnos, Lauren T. Toth, Nancy G. Prouty and Thomas M. DeCarlo 8 August 20253 October 2025

CoralCT archiva datos originales y procesados de núcleos de corales y arrecifes, preservando información valiosa sobre cómo los corales responden a cambios medioambientales.

An image of a slab of coral. Dark and light bands can be seen, which correlate with growing seasons.
Posted inNews

Coral Cores Pinpoint Onset of Industrial Deforestation

by Grace van Deelen 7 August 20251 January 2026

Trace elements in coral reefs provide a timeline of how Borneo’s rainforests have been altered by industry.

Gray-brown cliffs with spires next to a body of water
Posted inNews

Cave Deposits Reveal a Permafrost-Free Arctic

by Kaja Šeruga 4 August 20254 August 2025

Mineral cave deposits from northern Siberia show that the region was permafrost free during the late Miocene period, when Earth was warmer than today.

Close-up view of pieces of sea ice separated by a strip of open water.
Posted inScience Updates

Finding Consensus on Arctic Ocean Climate History

by Jochen Knies, Matt O’Regan and Claude Hillaire Marcel 25 June 202525 June 2025

Understanding the effects of a “blue” Arctic Ocean on future climate requires a coordinated effort to study Earth’s past warm periods using a variety of classical and cutting-edge methods.

Black-and-white computed tomography image of a coral core
Posted inScience Updates

A Coral Core Archive Designed for Transparency and Accessibility

by Avi Strange, Oliwia Jasnos, Lauren T. Toth, Nancy G. Prouty and Thomas M. DeCarlo 20 June 20251 January 2026

CoralCT archives raw and processed data from coral and reef core samples, preserving valuable insights into how corals respond to environmental changes.

An 8-centimeter-long metric ruler has silhouetted images of the classic “evolution of man.” The ruler is next to a fossil of a leaf.
Posted inResearch Spotlights

Early Apes Evolved in Tropical Forests Disturbed by Fires and Volcanoes

by Madeline Reinsel 12 June 202511 June 2025

Fossils discovered at an early Miocene site in Kenya include a new type of early ape and offer clues about the environment inhabited by human ancestors.

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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

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

30 January 202630 January 2026
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Cows, Coal, and Chemistry: The Role of Photochemistry in Methane Budget

27 January 202623 January 2026
Editors' Vox

Bridging the Gap: Transforming Reliable Climate Data into Climate Policy

16 January 202616 January 2026
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