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helium

Image of Earth with a blue halo.
Posted inNews

Fossil Fuels Drive Increase in Atmospheric Helium

by Jennifer Schmidt 9 June 202219 July 2022

After decades of uncertainty, scientists have finally shown that fossil fuel extraction has flooded the atmosphere with 4He.

A large hot spring bubbles and steams in the mountains of the Tibetan Plateau.
Posted inNews

Hot Springs Suggest How the Tibetan Plateau Became the Roof of the World

by Saima May Sidik 20 April 202223 February 2023

Helium isotopes found in water samples provide a snapshot of what lies beneath the plateau and stimulate debate within the geosciences community.

Two men fish in the Mekong River.
Posted inNews

How Old Is the Mekong River Valley?

Katherine Kornei, Science Writer by Katherine Kornei 22 October 201823 February 2023

Granite samples collected from the Mekong River Valley reveal that the river’s path was incised roughly 17 million years ago, most likely by increased erosion from monsoon precipitation.

Michael DeLucia standing in front of the Great Unconformity
Posted inNews

Erasing a Billion Years of Geologic Time Across the Globe

Lucas Joel by L. Joel 5 February 201823 February 2023

The Great Unconformity—a huge time gap in the rock record—may have been triggered by the uplift of an ancient supercontinent, say researchers using a novel method for dating rocks.

Researchers examine how Saturn’s magnetic field overlaps with that of the Sun.
Posted inResearch Spotlights

Probing the Cusps of Saturn’s Magnetic Field

by Mark Zastrow 10 October 201723 February 2023

Data from the Cassini spacecraft show that the cusp regions of Saturn’s magnetic field—where it connects to the Sun’s magnetic field—have similarities to Earth’s and also intriguing differences.

Posted inScience Updates

Better Tools for Tracing the Thermal History of Rocks

by P. Zeitler, R. Brown and P. Hackspacher 18 May 201723 February 2023

Thermo2016: The 15th International Conference on Thermochronology; Maresias, Brazil, 18–23 September 2016

Helium bubbles through hot spring in Rift Valley, Tanzania.
Posted inNews

Tanzanian Volcanoes May Hoard Helium Ready for the Taking

Amy Coombs by A. Coombs 28 July 201623 February 2023

Sweet spots of volcanic heat that are not too close to active eruptions may hold the world's richest reservoirs of the scientifically and medically important gas helium.

Posted inResearch Spotlights

Details of Gas Flow in Wetland Plant Roots Unearthed

by David Shultz 4 February 201624 February 2023

Scientists track the flow of trace gases through wetland root systems to understand the role of plants in biogenic gas fluxes.

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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