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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.

An artist’s rendering of the Gravity Recovery and Climate Experiment, or GRACE
Posted inResearch Spotlights

Improving Water Resources Management with Satellite Data

Aaron Sidder, freelance science writer by Aaron Sidder 8 April 20196 March 2023

An extensive review reveals that remote sensing is changing the way we manage water resources and suggests that the coming years will bring both exciting advancements and new challenges.

Space shuttle Endeavour in 2010 with a multihued view of Earth’s atmosphere layers
Posted inResearch Spotlights

The Thermosphere Responds to a Weaker Than Normal Solar Cycle

Aaron Sidder, freelance science writer by Aaron Sidder 5 April 201927 March 2023

Infrared emissions from nitric oxide and carbon dioxide in Earth’s upper atmosphere, which are closely tied to incoming solar radiation, are drastically lower than in the previous solar cycle.

The Yellow River rushes over the Hukou Waterfall in China
Posted inResearch Spotlights

Through Flood and Drought: Reconstructing the Yellow River

Aaron Sidder, freelance science writer by Aaron Sidder 4 April 201915 October 2021

Tree ring chronologies fill in gaps in the historical record and offer insights into the natural flow of China’s Yellow River.

A view of poor air quality in Delhi, India.
Posted inResearch Spotlights

Aerosol Particle Size May Contribute to Varying Health Responses

Aaron Sidder, freelance science writer by Aaron Sidder 4 April 201923 March 2023

Particulate matter in the atmosphere derives from industrial and environmental sources. The size of the particle determines how it deposits in the body and leads to different health challenges.

Laboratory experiment used to simulate the shock wave made by an asteroid impact on Mars
Posted inResearch Spotlights

Rover and Lasers Unlock Clues to Early Martian Atmosphere

Aaron Sidder, freelance science writer by Aaron Sidder 3 April 201924 April 2024

Sediments from the Curiosity rover and experiments using tanks of gas and laser beams helped reveal how water continued to flow on Mars after the planet lost its atmospheric carbon dioxide.

Twilight in the Tapajós National Forest, seen from an observation tower
Posted inResearch Spotlights

A Simplified Model of Water Vapor Exchange in the Amazon

Aaron Sidder, freelance science writer by Aaron Sidder 27 March 20195 September 2023

Evapotranspiration is the exchange of water vapor between land and the atmosphere, and it is hard to measure and model. A new study shows promise for its estimation over large, vegetated landscapes.

The moon rises behind a tree in the Ancient Bristlecone Pine Forest in California
Posted inResearch Spotlights

Topography and Microclimate Shape Tree Ring Growth

Aaron Sidder, freelance science writer by Aaron Sidder 25 March 201915 October 2021

Wizened bristlecone pines in California reveal past climate trends, and new research shows how slight variations in landscape position drive different growth patterns in trees’ annual rings.

Researchers measure soil infiltration capacity outside a private residence
Posted inResearch Spotlights

Strategies to Improve Urban Hydrology

Aaron Sidder, freelance science writer by Aaron Sidder 18 March 201930 March 2023

Cities can reduce surface runoff and increase groundwater recharge by encouraging their residents to implement simple, hydrologic modifications on individual buildings and single-family parcels.

A mosaic image of the asteroid Bennu
Posted inResearch Spotlights

Scientists, Explorers Keen to Locate Water-Bearing Asteroids

Aaron Sidder, freelance science writer by Aaron Sidder 11 March 201925 August 2022

Hydrated minerals on near-Earth asteroids offer both scientific revelations and economic incentives for companies looking to refuel satellites with material from nearby space.

A view of Hawaii’s Kīlauea volcano erupting and flowing into the ocean
Posted inResearch Spotlights

Magnetic Anomalies on the Pacific Plate Reveal True Polar Wander

Aaron Sidder, freelance science writer by Aaron Sidder 11 March 201920 December 2021

A new study rebuffs the standard approach to paleomagnetism and offers an updated methodology and new locations of paleomagnetic poles.

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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.

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