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J. Besl

A 2017 landslide in Freetown, Sierra Leone, killed an estimated 1,100 residents, largely in informal settlements.
Posted inNews

Protecting Poor Neighborhoods from Landslide Risk

by J. Besl 8 December 20221 June 2023

As low-income, informal settlements bloom in the tropics, their risk of landslides increases. A new modeling tool incorporates urbanization factors to protect the region’s poorest neighborhoods.

Mangrove forest
Posted inNews

After a Hurricane, Coastal Systems Draw a Line in the Sand

by J. Besl 13 April 202213 April 2022

A new study finds nature can’t have it both ways: On the basis of thousands of case studies from dozens of hurricanes, there’s always a trade-off between resistance and resilience.

Imagen aérea de un vecindario en Texas inundado. Se observan sólo los techos de las casas y las copas de los árboles.
Posted inNews

Cuando los ríos están contaminados, las inundaciones son solamente el primer problema

by J. Besl 24 March 202227 March 2023

A medida que las inundaciones aumentan en frecuencia e intensidad, los productos químicos enterrados en los sedimentos de los ríos se convierten en “bombas de tiempo” que esperan activarse.

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.

An artist’s rendering of TOI-2180 b
Posted inNews

At-Home Astronomers Help Discover a New, Unique Exoplanet

by J. Besl 2 March 20222 March 2022

Amateur astronomers sifting through NASA’s public data uncovered a long-orbit gas giant that could help scientists understand how these planets form.

Posted inNews

Una nueva herramienta crea rápida y gratuitamente mapas de inundaciones para el sur global

by J. Besl 8 December 202131 March 2022

Un nuevo programa en línea puede trazar rápidamente los contornos de inundaciones pasadas, permitiendo que los países con escasez de datos se preparen para futuros desastres.

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.

Overhead shot of a flooded river in the center of Hue, Vietnam
Posted inNews

New Tool Crafts Fast, Free Flood Maps for the Global South

by J. Besl 2 November 202130 September 2022

A new online program can quickly map the outlines of past floods, allowing data-scarce countries to prepare for future disasters.

Posted inNews

Greener, Wetter Arabia Was a Crossroads of Early Human Migration

by J. Besl 7 October 202126 April 2022

Hand axes, hippo bones, and a stack of ancient lake beds show that arid Arabia experienced intervals of humid weather, spurring pulses of human migration over the past 400,000 years.

Floodwaters fill the streets of Port Arthur, Texas, after Hurricane Harvey in 2017.
Posted inNews

When Rivers Are Contaminated, Floods Are Only the First Problem

by J. Besl 10 September 202129 March 2023

As floods increase in frequency and intensity, chemicals buried in river sediments become “ticking time bombs” waiting to activate.

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More Bubbles Means More Variation in Ocean Carbon Storage

8 July 20258 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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