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Earth science

A 200-year-old oak tree was removed from a residential yard in De Pere, Wis., due to a split extending to the ground.
Posted inAGU News

New Discoveries in Old Records

by Caryl-Sue Micalizio 22 February 202322 February 2023

Scientists take fresh approaches to seemingly familiar data in timbers and sediments.

Tree rings shown on a cut piece of timber
Posted inFeatures

Finding Climate History in the Rafters of New York City Buildings

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 22 February 202322 February 2023

When renovating in the Big Apple, you might acquire a several-hundred-year-old climate database along with your new kitchen and bath.

An orb-shaped ocean bottom seismometer descending into the sea surface
Posted inResearch Spotlights

Small-Scale Convection Shuffles the Oceanic Lithosphere

Sarah Derouin, Science Writer by Sarah Derouin 21 February 20238 July 2024

Seafloor spreading organized lithospheric minerals into a lattice, but small-scale convection jumbled up the innermost layer.

Three ants crawl on a vine. The ants and the vine are seen in silhouette with a yellow sunset behind them.
Posted inNews

Ants Aren’t Adapting to Warmer Temperatures

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 17 February 202317 February 2023

Foraging in hotter-than-desired temperatures could negatively affect ants’ biology and the forest ecosystems that they support.

Four bolts of lightning strike the ground simultaneously against a purple sky.
Posted inResearch Spotlights

Scientists Can Now Map Lightning in 3D

by Morgan Rehnberg 15 February 202315 February 2023

A new approach enables meter-scale localization of lightning strikes. And it’s already illuminating the basic physics of the phenomenon.

Photo of a hilly, green area with scattered trees.
Posted inNews

Mapping Rwanda’s Trees from Above

by H. Mafaranga 13 February 202314 February 2023

Researchers used both aerial and satellite imagery, as well as machine learning, to map the carbon stock of every overstory tree in Rwanda—the first such inventory in the world.

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.

An aerial view of a beige and green landscape on the San Andreas fault
Posted inResearch Spotlights

A New Measure of Roughness Could Advance Earthquake Geophysics

Sarah Stanley, Science Writer by Sarah Stanley 8 February 20238 February 2023

Scientists recently developed an alternative way to measure a rock’s roughness. It might help them understand the physics of faults.

Photo of a forest floor with several downed trees. Exposed roots and dirt from a large tree are in the center.
Posted inNews

Roughed-Up Hillsides Reveal Tree-Toppling Winds

by Carolyn Wilke 7 February 20237 February 2023

Researchers are reading pockmarks in the forest floor to study the uprooting of trees in southern Indiana and estimate how fast winds howled through the forest in the past.

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Features from AGU Publications

Research Spotlights

Machine Learning Simulates 1,000 Years of Climate

27 August 202527 August 2025
Editors' Highlights

Equatorial Deep Ocean Response to the Madden-Julian Oscillation

27 August 202526 August 2025
Editors' Vox

Waterworks on Tree Stems: The Wonders of Stemflow

21 August 202520 August 2025
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