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bacteria & microbes

A black smoker, shaped like a stone cylinder on the ocean floor, spews black smoke into the water.
Posted inNews

Arctic Hydrothermal Vents May Resemble Those on Enceladus

by Anna FitzGerald Guth 17 December 202417 December 2024

By studying hydrogen-rich vent sites on Earth, scientists could learn more about the hidden ocean of Saturn’s icy moon—one of our solar system’s likeliest candidates for harboring life beyond Earth.

The Chesapeake Bay as seen from Sandy Point in Maryland.
Posted inNews

Climate Change Is Driving Dangerous Bacteria Farther North

by Lauren Schneider 13 December 202413 December 2024

Satellite data could help address rising rates of vibriosis infections, often the result of eating undercooked seafood, along the East Coast of the United States.

Earth’s mid-ocean ridge system, shown in mostly blue and green.
Posted inNews

Mid-Ocean Ridges Could Be Dispersing Thermophilic Bacteria

by Miriam Bahagijo 12 December 202412 December 2024

Scientists suggest that two strains of endospores located more than 4,000 kilometers away from one another originated in the same place: along the Mid-Atlantic Ridge.

Photo of a muddy river.
Posted inEditors' Highlights

Physics and Biology as Likely Stream Bedfellows

Eric Davidson, president-elect of AGU by Eric Davidson 18 November 202415 November 2024

Streambeds are key sites for removal of nutrients and other contaminants through microbial processes, but are limited by diffusion, which can now be modeled from streambed physical properties.

Scientists stand atop Arctic ice.
Posted inFeatures

The Arctic’s Uncertain Future

by Grace van Deelen 15 November 202425 September 2025

Over the next century, the Arctic will change and look much different than it does today. Just how different is still unknown.

A cliff face with pink and red layers
Posted inNews

Bacteria Battled for Iron in Earth’s Early Oceans

by Caroline Hasler 15 November 202416 January 2025

Billions of years ago, iron-oxidizing microbes may have competed for dissolved iron in the ocean, with some strains producing toxic gases that smothered their rivals.

Microphotograph of diatoms of various shapes and sizes.
Posted inEditors' Highlights

Machine Learning Enhances Image Analysis in Biogeosciences

by Dork Sahagian 6 November 20245 November 2024

Machine learning can enhance our ability to identify communities of microorganisms and how they change in response to climate change over time.

Photo of a desert with white salt on the surface.
Posted inEditors' Vox

Soil Salinization: A Rising Threat to Ecosystems and Global Food Security

by Nima Shokri, Amirhossein Hassani and Muhammad Sahimi 21 October 202418 October 2024

As soil salinization intensifies, it poses serious threats to ecosystems, soil health, global food security and socio-economic stability.

A satellite image shows miles-wide blooms of green phytoplankton in the ocean.
Posted inNews

Microbe Preferences Drive Ocean Carbon Pump

by Grace van Deelen 15 October 202415 October 2024

New research offers insight into how certain bacteria degrade organic matter in Earth’s oceans.

A thin stream of water on a dirt surface curves off to the left out of frame. Two large mountains—one a snowy peak, one not—are in the distance.
Posted inResearch Spotlights

Each Glacier Has a Unique Organic Matter Composition

by Saima May Sidik 15 October 202415 October 2024

Like snowflakes, no two glaciers are alike: Carbon-containing compounds released from glaciers vary from place to place, meaning climate and ecosystem effects of melting could vary as well.

Posts pagination

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

How Internal Waves Transport Energy Thousands of Miles Across the Ocean

26 March 202626 March 2026
Editors' Highlights

What’s Under the Water Matters

27 March 202626 March 2026
Editors' Vox

The Future of Earth’s Future

24 March 202624 March 2026
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