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proxies

Sand dunes flank a freshwater lake.
Posted inNews

Estimating Lake Evaporation Just Got Easier

by Issa Sikiti da Silva 9 February 202211 February 2022

A new method standardizes freshwater lake measurements and shows they are losing a fifth of their inflow to evaporation.

Photo of a scientific raft used to extract sediment cores from Caldeirao Lake on Corvo Island, Azores.
Posted inNews

Sediments Suggest Vikings May Have Been the First to Settle the Azores

by Santiago Flórez 4 January 20224 October 2022

A multidisciplinary team studying lake sediments and climate change found evidence that the archipelago was inhabited 700 years earlier than historical sources claim.

A small flock of sheep graze by the water’s edge in the Faroe Islands.
Posted inNews

Ancient Eruptions Reveal Earliest Settlers on the Faroe Islands

by Freda Kreier 16 December 202120 December 2021

Lake sediment is helping scientists resolve a decades-long historical mystery.

Posted inResearch Spotlights

Tubos de lava terrestres podrían ofrecer información sobre la vida extraterrestre

Aaron Sidder, freelance science writer by Aaron Sidder 29 November 202129 November 2021

Una nueva investigación encuentra que Actinobacteria en cuevas de lava fijan carbón y sobreviven independientemente de aportes superficiales, ofreciendo una nueva perspectiva en la investigación de la vida fuera de la Tierra.

Trees with a view of Italy’s Mount Etna behind.
Posted inNews

Supergreen Trees Can Signal Sites of Eruptions

by J. Besl 8 November 202126 April 2022

Tree core chemistry can explain what happened before Mount Etna’s 2002 eruption and suggests that trees could play a role in rebuilding past eruptions.

Margaritifera laevis shells on the bottom of a river.
Posted inNews

Freshwater Mussel Shells May Retain Record of Alpine Snowpack

by Stacy Kish 4 October 202129 March 2023

A new study explores a possible proxy for seasonal freshwater input that could elucidate changes in alpine snowpack as the planet warms.

Lava tubes at Lava Beds National Monument in California
Posted inResearch Spotlights

Earthly Lava Tubes May Offer Insights into Extraterrestrial Life

Aaron Sidder, freelance science writer by Aaron Sidder 21 September 202118 January 2022

New research finds that Actinobacteria in lava caves fix carbon and survive independent of surface inputs, offering a fresh perspective in the search for life beyond Earth.

A burst of sunlight above a cloudy Earth.
Posted inNews

Small Climate Changes Could Be Magnified by Natural Processes

Damond Benningfield, Science Writer by Damond Benningfield 16 September 202129 March 2023

A new study uses modeling techniques to uncover how small incidents of warming may be turned into hyperthermal events lasting thousands of years.

A person’s gloved hand holds part of an ice core in which air bubbles can be seen, with the Antarctic landscape in the background. The ice in the core is up to 24,000 years old.
Posted inAGU News

Cutting to the Core

Heather Goss, AGU Publisher by Heather Goss 24 June 202114 April 2022

In our July issue, Eos looks at the collection, study, and storage of cores—from sediment drilled up from the age of the dinosaurs to tree rings as big as a house.

In the foreground, a group of narwhals, some with long spiral tusks, breaches the ocean surface in a gap between sea ice. Sea ice in the background is patchy, and a group of mountains sits on the distant horizon.
Posted inNews

Narwhal Tusks Record Changes in the Marine Arctic

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 19 May 202116 December 2021

This new paleorecord can help scientists better understand how climate change and human activity are changing marine mammals’ environments and habits.

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Tracing Black Carbon’s Journey to the Ocean

11 July 202510 July 2025
Editors' Highlights

The Power of Naming Space Weather Events

10 July 20258 July 2025
Editors' Vox

Water Tracks: The Veins of Thawing Landscapes

25 June 202525 June 2025
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