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paleoclimatology & paleoceanography

View through a microscope of yellow spheres and white shapes with thin lines
Posted inNews

Marine Life May Be Headed to Higher Latitudes

by Mackenzie White 19 April 202319 April 2023

Researchers tracked plankton through a changing climate over 8 million years. Now, that knowledge is helping scientists understand the coming effects of warming oceans.

A layered tan-colored rock on a table with a ruler and quarter for scale.
Posted inNews

Wisconsin Stalagmite Records North American Warming

by Stacy Kish 6 April 20236 April 2023

A speleothem has revealed rapid periods of warming across the interior of the continent during the last glacial period, corresponding to similar events recorded in Greenland ice.

Sediments of various sizes sit on the seafloor. A blossoming, white sunbeam flares against the blue backdrop of the sea.
Posted inNews

Deep-Sea Sand and Where to Find It

by Emily Shepherd 30 March 202330 March 2023

Ancient underwater avalanches carried sand into the ocean’s abyss during a time when some least expected it.

A long cylinder of ice on a table
Posted inNews

Ice Cores Record Long-Ago Seasons in Antarctica

by Caroline Hasler 17 March 202316 May 2023

Researchers used ice core data to reconstruct seasonal temperatures throughout the Holocene. The results link especially hot summers with patterns in Earth’s orbit.

Photos of rocks on Mars.
Posted inEditors' Highlights

Martian Rocks May Record Ancient Wind Directions

by Scott Guzewich 14 March 20236 March 2023

Mars 2020 Perseverance Rover images of abraded surface rocks may retain records of ancient wind directions, providing important ground-truth to our understanding of Mars’ recent climate history.

Close-up view of bright green algae fronds
Posted inScience Updates

Making Sense of the Great Barrier Reef’s Mysterious Green Donuts

by Jody Webster, Mardi McNeil, Helen Bostock, Luke Nothdurft and Maria Byrne 9 March 20239 March 2023

Researchers set sail to the Great Barrier Reef to study how ring-shaped algae deposits formed and evolved, what feeds them, and the diversity of creatures that call them home.

Flat green land with small ponds
Posted inNews

The Bering Land Bridge Formed Much Later Than Previously Thought

by Clara Chaisson 28 February 202328 February 2023

New research reconstructs the Bering Strait’s flooding history, raising surprising questions about human migration and how ice sheets form.

Imagen satelital en blanco y negro mostrando un valle y un paleolago en la superficie de Marte.
Posted inResearch Spotlights

Lagos longevos cuentan una historia sobre el agua en Marte

Sarah Derouin, Science Writer by Sarah Derouin 24 February 202324 February 2023

Imágenes de alta resolución de paleolagos recientemente descubiertos en Marte demuestran un período de su historia con flujo de agua constante.

Photograph of a rocky hillslope with two people sitting at the top, in the distance.
Posted inNews

UV Radiation Contributed to Earth’s Biggest Mass Extinction

Rachel Fritts, Science Writer by Rachel Fritts 10 February 202327 February 2023

To find the first direct evidence of heightened UV radiation during the end-Permian mass extinction, researchers turned to chemical evidence preserved in pollen grains.

Plants with thick, fleshy, pointed green leaves in the foreground, brown fossil in the background
Posted inNews

Small Shrubs May Have Played a Large Role in Decarbonizing the Ancient Atmosphere

by Meghie Rodrigues 9 February 20239 February 2023

Vascular plants may have contributed to shaping Earth’s atmosphere long before trees evolved.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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