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South America

Illustration of the central Amazon rainforest
Posted inEditors' Vox

Why Tropical Forests Are Important for Our Well-Being

by Laura Borma 3 March 20237 June 2023

Tropical forests play a critical role in supporting human well-being, food security, and the maintenance of biodiversity.

Mist permeates a lush rain forest in Tanzania
Posted inNews

Monitoring Moisture from Afar

by Danielle Beurteaux 12 October 202212 October 2022

Undisturbed tropical rain forests are experiencing more frequent droughts, but the ecosystems are isolated and difficult to assess. Scientists are using remote sensing to expand the depth and scope of monitoring efforts.

A person stands amid tall trees on a lush green mountainside.
Posted inResearch Spotlights

Amazon Basin Tree Rings Hold a Record of the Region’s Rainfall

Rachel Fritts, Science Writer by Rachel Fritts 11 October 202221 June 2023

New research provides a 200-year reconstruction of interannual rainfall in the Amazon basin using oxygen isotopes preserved in tree rings in Ecuador and Bolivia.

A small brown and gray mouse, Abrothrix hirta, sits on green grass strewn with a few brown leaves. The mouse faces left and is photographed in profile.
Posted inNews

Rain Makes Skulls Bigger—in Mice

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 4 October 202228 October 2022

New research shows how regional weather, shaped by towering mountain ranges, might influence the size and shape of local rodents.

Rocky high mountain landscape under a clear blue sky, with vegetation and a small lake in the foreground.
Posted inScience Updates

A Puzzle Mat for Assembling Colombia’s Geologic History

by Carolina Ortiz-Guerrero 11 April 202210 April 2023

A new database compiles all the available pieces of information about Colombia’s geochronology, offering scientists a consistent framework in which to view and study the data in a broader context.

The Amazon Tall Tower Observatory is a joint Brazilian-German research station with a 325-meter tower making environmental observations in the Amazon.
Posted inFeatures

Africa’s Earth, Wind, and Fire Keep the Amazon Green

by J. Besl 23 March 202225 March 2022

Jet streams sprinkle North African dust over the Amazon, providing the rain forest with much needed nutrients. Changing wind patterns and increasing smoke may shift the system.

A view across the Amazon rain forest
Posted inAGU News

Dust in the Wind, Dirt Under Our Feet, and Dunes of Another World

Heather Goss, AGU Publisher by Heather Goss 23 March 202223 June 2022

In our April issue of Eos, we follow researchers who get to the root of the Amazon basin’s rich landscape.

Lofted dust layers over the Andes mountains
Posted inNews

Iodine-Laden Desert Dust Is Eating at Ozone Pollution

by Jackie Rocheleau 28 February 202228 February 2022

In a happy accident, scientists found a potential solution to an atmospheric chemistry mystery. Their findings could be a missing piece in the iodine cycle and in atmospheric models.

A woman wearing a hat plants seedlings in the foreground of this picture, as a group of men and women do the same farther back.
Posted inNews

Traditional Knowledge Is Essential to Sustainability in the Amazon

by Meghie Rodrigues 12 November 202116 December 2022

At COP26, the Science Panel for the Amazon is emphasizing the need for Indigenous and Local Knowledge to inform scientific and policy recommendations.

Project design of the Antarctic station Comandante Ferraz projected by Estúdio 41.
Posted inNews

Brazil’s Antarctic Station Rises from the Ashes

by Meghie Rodrigues 2 August 20216 December 2021

The sophisticated new research station will allow for better science on the icy continent.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

An Ecosystem Never Forgets

19 December 202519 December 2025
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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