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life as we know it

A diver approaches rocks covered with multicolored mats of bacteria.
Posted inNews

Longer Days Likely Boosted Earth’s Early Oxygen

Damond Benningfield, Science Writer by Damond Benningfield 3 September 202117 November 2021

Microbial mats in a Lake Huron sinkhole, combined with modeling work, suggest that the changing length of Earth’s day could have played a key role in oxygenating the atmosphere.

Ashley Walker stands against a railing on a platform overlooking the wooded mountains surrounding the Green Bank Telescope in West Virginia.
Posted inFeatures

Ashley Lindalía Walker: Leading a Celebration of Black Scientists

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 24 August 202123 March 2023

Astronomer bridges academic and social media outreach.

A collection of globular, multicellular membrane-bearing algae from the Kuanchuanpu biota
Posted inResearch Spotlights

Multicellular Algae Discovered in an Early Cambrian Formation

by David Shultz 16 August 202130 January 2023

A new study describes eukaryotic organisms found organized in a cortex-medulla pattern in southern China’s Kuanchuanpu Formation.

A single geyser erupts steam into the sky.
Posted inFeatures

Why Study Geysers?

by S. Hurwitz, M. Manga, K. A. Campbell, C. Muñoz-Saez and E. P. S. Eibl 30 July 202125 February 2022

Aside from captivating our senses, geysers have much to tell us about subsurface fluids, climate change effects, and the occurrence and limits of life on Earth and elsewhere in the solar system.

An artist’s representation of an exoplanet with a dark surface
Posted inOpinions

“Earth Cousins” Are New Targets for Planetary Materials Research

by E. Kite, L. Kreidberg, L. Schaefer, R. Caracas and M. Hirschmann 10 June 202128 January 2022

“Cousin” worlds—slightly bigger or slightly hotter than Earth—can help us understand planetary habitability, but we need more lab and numerical experiments to make the most of this opportunity.

Sediment cores retrieved from the Atacama Trench (top left) and sliced on board (top right)
Posted inResearch Spotlights

A Deep Dive into Organic Carbon Distribution in Hadal Trenches

Kate Wheeling, freelance science writer by Kate Wheeling 28 May 20219 November 2022

Researchers use sediment cores to study the amount and origin of sediment organic carbon in one of the least studied regions of the planet: hadal trenches.

Artist’s depiction of Earth in a shower of cosmic rays coming from a background Sun.
Posted inNews

Taking Stock of Cosmic Rays in the Solar System

by Jure Japelj 5 May 202125 October 2021

Scientists seek to understand the elusive properties of stellar and galactic cosmic rays before searching for life on exoplanets.

Illustration of a lightning storm over volcanic land on early Earth
Posted inNews

Cloud-to-Ground Lightning May Have Struck a Key Ingredient for Life

by Jackie Rocheleau 30 April 202129 September 2021

On early Earth, rock created by lightning strikes to the ground likely held a form of phosphorus necessary for prebiotic chemistry.

Image of Andrew Knoll standing in front of beige and gray rocks wearing jeans and a T-shirt
Posted inGeoFIZZ

Communicating Earth’s Deep Past: A Q&A with Andrew Knoll

Laura Poppick, freelance science writer by L. Poppick 27 April 202113 October 2022

The Earth historian’s new book illustrates the long and winding road that brought our planet into the current moment of global change.

Chart showing that results from a family of simulations that track changing pressures of three gases
Posted inEditors' Highlights

Is Atmospheric Oxygen a Planetary Signature for Life?

by Bethany Ehlmann 21 April 202115 March 2022

While some Earth-like worlds can generate significant O2 only by biology, “waterworlds” and “desert worlds” can build up O2 even without life because of chemical changes from atmosphere loss to space.

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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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