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Aaron Sidder, freelance science writer

Aaron Sidder

Aaron Sidder is a freelance writer based out of Denver, Colo. He has a master’s degree in ecology from Colorado State University. Aaron was an AGU-sponsored AAAS Mass Media Science & Engineering Fellow at National Geographic in 2016, and he has been writing for Eos ever since. In addition to Eos and National Geographic, he has written for National Geographic Kids Magazine, Smithosonian Smart News, 5280 Magazine, and the Santa Fe Institute. In his free time, he cultivates an extensive—and growing—collection of field guides from around the country.

A person sits on a platform on a marsh. The platform is connected to a series of wires connected to a white tower.
Posted inResearch Spotlights

Dry Heat, Wet Heat, and Wetland Methane Emissions

Aaron Sidder, freelance science writer by Aaron Sidder 20 November 202420 November 2024

Compound weather events—such as extreme cold or heat combined with severe dryness or precipitation—have a greater effect on wetland methane emissions than discrete weather extremes do.

O Sol poente fica logo acima do horizonte e sob um céu parcialmente nublado, com um corpo de água em primeiro plano.
Posted inResearch Spotlights

Insights Biogeoquímicos de um Importante Rio Amazônico

Aaron Sidder, freelance science writer by Aaron Sidder 22 October 202422 October 2024

Sub-representados nos orçamentos globais de carbono, rios tropicais como o Tocantins, no Brasil, necessitam de estudos para estabelecer suas características de base face às crescentes mudanças globais.

A coastline is seen from above. The area is mostly covered in greenery, but what appears to be a large landslide has uncovered gray soil that is falling into the blue ocean.
Posted inResearch Spotlights

Down in the Slumps: Tracing Erosion Cycles in Arctic Permafrost

Aaron Sidder, freelance science writer by Aaron Sidder 21 October 202421 October 2024

Climate change is altering permafrost thaw cycles and leading to unique Arctic erosional problems.

A submersible vessel explores a polymetallic nodule field on the seafloor in the Pacific Ocean.
Posted inResearch Spotlights

The Unexpected Role of Magnetic Microbes in Deep-Sea Mining

Aaron Sidder, freelance science writer by Aaron Sidder 26 September 202424 April 2025

A new study highlights the co-occurrence of magnetic bacteria and polymetallic nodules and may offer insights into how the mineral-rich nodules form on the ocean floor.

White birch trees growing out of a green forest floor. Many of the trees extend out of the frame of the photo.
Posted inResearch Spotlights

Scientists Present Europe’s New Greenhouse Gas Budget

Aaron Sidder, freelance science writer by Aaron Sidder 3 September 202414 February 2025

The greenhouse gas budget developed for Europe highlights carbon sources and sinks across the continent and will serve as a baseline for years to come.

瑞典的一个湖泊上,一名科学家从栈桥上探出身子,对湖泊的甲烷排放进行取样。
Posted inResearch Spotlights

53位专家对全球甲烷预算发表意见

Aaron Sidder, freelance science writer by Aaron Sidder 15 August 20243 February 2025

一项专家调查显示,全球甲烷评估的不确定性主要来自淡水、植被和沿海地区的数据。

Aerial image of a gray volcano topped with snow emitting a large cloud of gray smoke. The volcano is surrounded by dark blue water.
Posted inResearch Spotlights

How Mantle Hydration Changes over the Lifetime of a Subduction Zone

Aaron Sidder, freelance science writer by Aaron Sidder 19 July 202418 July 2024

Water released from subducting oceanic plates influences the formation of volcanoes and earthquakes on Earth’s surface. A new study simulates how slab dehydration and mantle hydration levels change over time.

A scientist leans off a dock to sample methane emissions from a lake in Sweden.
Posted inResearch Spotlights

Fifty-Three Experts Weigh in on the Global Methane Budget

Aaron Sidder, freelance science writer by Aaron Sidder 26 June 202415 August 2024

A survey of experts revealed that uncertainty in estimates of global methane levels stems largely from data on fresh water, vegetation, and coastal areas.

An extreme heat warning sign in Death Valley National Park in California
Posted inResearch Spotlights

Expecting the Unexpected Could Help Us Prepare for Climate Extremes

Aaron Sidder, freelance science writer by Aaron Sidder 12 June 202413 June 2024

A new paper argues that too little consideration of high-impact, low-likelihood events has left us unprepared for the worst of climate change.

Boats float in low-water conditions in California’s Lake Oroville.
Posted inResearch Spotlights

When Extreme Drought Becomes Commonplace

Aaron Sidder, freelance science writer by Aaron Sidder 29 April 202429 April 2024

As drought becomes a more regular occurrence, a new study looks at the U.S. Drought Monitor, the nation’s preeminent drought classifier, to see how it has reflected climate change since 2000.

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Features from AGU Publications

Research Spotlights

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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