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paleoclimatology & paleoceanography

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 202321 December 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.

Photo of a sample under a microscope
Posted inEditors' Vox

Rare and Revealing: Radiocarbon in Service of Paleoceanography

by Luke C. Skinner and Edouard Bard 7 February 20237 February 2023

While radiocarbon is best known as a dating tool, this rare isotope can also provide unique and wide-ranging insights into the cycling of carbon in the Earth system.

An artist’s rendering of Earth covered in ice
Posted inNews

How Animals May Have Conquered Snowball Earth

by Chris Baraniuk 9 January 202323 January 2023

We know there were animals during Earth’s chilliest era. The question is, What did they look like?

Posted inEditors' Highlights

Marine Molybdenum Loss During the Toarcian Ocean Anoxic Event

by Nicolas Gruber 7 January 202327 January 2023

The reconstructed loss of molybdenum during the Toarcian ocean anoxic event suggests deeply anoxic conditions during this time period allowing massive amounts of organic carbon being buried.

Posted inEditors' Highlights

A Drier or Wetter Future for Southwestern North America?

by Susan Trumbore 31 December 202217 February 2023

Bhattacharya et al. present evidence that expansion of the North American Monsoon explains a wetter southwest in the mid-Pliocene and suggest this mechanism can explain current monsoon variations.

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