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Terri Cook

Terri Cook is an award-winning freelance writer whose career has focused on exploring and explaining the 4.5-billion-year-history of the remarkable planet we live on. Cook, who has an M.S. degree in Earth science from the University of California, Santa Cruz, writes about geology, ecology, and the environment—as well as wine, tea, hiking, and biking—for a diverse group of publications, including Eos, Scientific American, NOVA Next, Science News, and EARTH magazine, as well as Avalon Travel and numerous other travel-related publications. Her reporting has taken her to 25 states and 20 countries scattered across 5 continents, from the depths of the Grand Canyon to the sandy Australian Outback to the mist-shrouded summit of Bali’s Mount Batur. As the coauthor of three popular guidebooks, including Hiking the Grand Canyon’s Geology and Geology Underfoot Along Colorado’s Front Range, Cook gives frequent presentations about geology and science communication. She is the recipient of a 2016 European Geosciences Union Science Journalism Fellowship and is based in beautiful Boulder, Colo.

Smog and Hong Kong’s skyline, seen from Victoria Peak.
Posted inResearch Spotlights

Chemical Boosts Ozone Production over Southern China

by Terri Cook 27 May 201613 February 2023

The presence of nitryl chloride in polluted urban air can enhance the production of ozone by up to 41%, according to a new modeling study constrained by ground-based measurements.

Topography and bathymetry around Greenland overlain with ancient slab material projected from 1400 kilometers depth.
Posted inResearch Spotlights

Evidence of an Extinct Ocean Basin Detected Beneath Greenland

by Terri Cook 25 May 201611 January 2022

An analysis of a seismic and gravity anomaly discovered in the middle mantle sheds new light on ancient oceans, the mantle's evolution, and ancient magmatism in the Arctic.

Example of old and new instrument types used across the U.S. by the Cooperative Observer Program to record maximum and minimum daily temperatures.
Posted inResearch Spotlights

Toward a Reassessment of Daily Temperature Range Trends

by Terri Cook 23 May 201620 March 2023

To reduce the uncertainty associated with this important climate change index, recent studies have developed a new diurnal temperature range data set and compared the results to previous estimates.

Brandon Shores Generating Station
Posted inResearch Spotlights

Evaluating the Impact of Maryland's Healthy Air Act

by Terri Cook 12 May 201627 February 2023

Reducing emissions of short-lived gaseous sulfur pollutants from power plants had an immediate, local benefit, but controlling longer-lasting harmful particulate matter will require regional action.

Estimated pattern of multidecadal internal variability in (top) Pacific and (bottom) Atlantic sea surface temperatures.
Posted inResearch Spotlights

Was the Recent Slowdown in Surface Warming Predictable?

by Terri Cook 11 May 20163 February 2023

The temporary deceleration in warming across the Northern Hemisphere earlier this century could not have been foreseen by statistical forecasting methods, a new study concludes.

Watershed
Posted inResearch Spotlights

How Much Dissolved Mercury Is Present in Streams?

by Terri Cook 10 May 201616 February 2022

The results of a new study suggest that an improved understanding of the processes mobilizing mercury in soils will be necessary to predict water quality impacts.

giant-squid-larva
Posted inResearch Spotlights

Understanding the Distribution of Juvenile Jumbo Squid

by Terri Cook 9 May 201622 October 2021

An expanding zone of shallow, oxygen-depleted water in the eastern tropical Pacific Ocean may be vertically restricting the habitat of this important source of food, according to a recent study.

A view of Earth from space, visualizing the stratospheric aerosol layer.
Posted inResearch Spotlights

A Decade of Progress in Stratospheric Aerosol Research

by Terri Cook 20 April 20162 February 2022

Enhanced technology and chemistry-climate models have advanced our understanding of the sources and processes controlling the evolution of the stratospheric aerosol layer, the so-called Junge layer.

Posted inResearch Spotlights

Are U.S. States Prepared to Manage Water in a Changing Climate?

by Terri Cook 18 April 201626 March 2024

An empirical study of water allocation and planning in five states concludes that they lack a statewide strategy to manage the impacts of climate change on water resources.

Posted inResearch Spotlights

Improving the Identification of Extreme Precipitation Trends in the U.S.

by Terri Cook 14 April 201628 February 2023

By greatly reducing the associated uncertainty, a new model is better able to discern statistically significant trends, offering the potential to improve the seasonal forecasting of rare events.

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A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

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New Perspectives on Energy Sinks During Seismic Events

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Experienced Researcher Book Publishing: Sharing Deep Expertise

3 September 202526 August 2025
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