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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.

The first field measurements of deep-sea turbidity currents reveal the mechanism behind how they transport sediment so far.
Posted inResearch Spotlights

How Do Deep-Sea Gravity Currents Transport Sediment So Far?

by Terri Cook 2 March 201814 March 2024

The first field measurements of turbidity currents flowing around submarine channel bends indicate spiral flow plays a key role in keeping sediment suspended for hundreds of kilometers.

Researchers trace medieval temperature trends across Africa and Arabia
Posted inResearch Spotlights

Medieval Temperature Trends in Africa and Arabia

by Terri Cook 9 February 201821 February 2023

A synthesis of paleotemperature reconstructions from published case studies suggests warm onshore temperatures persisted across most of Afro-Arabia between 1000 and 1200 CE.

Researchers compare observations and modeling to track the growth of drumlins beneath a surge-type glacier
Posted inResearch Spotlights

A New Model of Drumlin Formation

by Terri Cook 8 February 201823 March 2023

Observations from the surge-type glacier Múlajökull in Iceland underpin new modeling results that suggest the glacier’s drumlins grow during quiet intervals of normal flow between glacial surges.

Researchers look at physical mechanisms that increase ice sheet discharge and how they impact sea level projections
Posted inResearch Spotlights

Incorporating Physical Processes into Sea Level Projections

by Terri Cook 5 February 201815 March 2023

Including the effects of physical mechanisms that can quickly increase ice sheet discharge significantly raises sea level rise projections under high-emission scenarios.

Researchers examine mudstone in Mars’s Gale crater to unravel the history of liquid surface water
Posted inResearch Spotlights

History of Water on Mars’s Surface Is Longer Than We Thought

by Terri Cook 2 February 20183 January 2023

Curiosity’s two-step heating experiment of mudstone at Gale crater reveals minerals that formed in the presence of water less than 3 billion years ago.

Researchers use satellite data to track nitrous oxide in the atmosphere
Posted inResearch Spotlights

First Near-Global Measurements of Isotopic Nitrous Oxide

by Terri Cook 31 January 201823 January 2023

By harnessing satellite data collected from low-Earth orbit, scientists can now track the distribution of atmospheric nitrous oxide and its isotopes.

New modeling analyzes how snow affects the intensity of mountain precipitation in a changing climate
Posted inResearch Spotlights

How Does Snow Affect the Intensity of Mountain Precipitation?

by Terri Cook 24 January 20186 February 2023

A new investigation into the sensitivity of extreme precipitation in a changing climate indicates that more winter rainfall and protracted snowmelt may require local adaptations to winter flooding impacts.

Posted inResearch Spotlights

Accounting for the Missing Silica in the Marine Sediment Cycle

by Terri Cook 16 January 201828 January 2022

Cosmogenic silicon-based estimates of the amount of biogenic silica stored in clays along continental margins could explain the large discrepancy in the nutrient’s global marine budget.

Researchers reassess how water circulates between ocean and land
Posted inResearch Spotlights

Rethinking How Water Circulates Between the Oceans and Land

by Terri Cook 11 January 201813 February 2023

A reexamination of the global water cycle shows that tropical coastlines exert a profound influence on atmospheric water circulation by wringing water vapor from the atmosphere.

Researchers use radar satellite imagery to measure changes in the topography of Ecuador’s El Reventador volcano
Posted inResearch Spotlights

Using Radar to Understand How Volcanic Eruptions Evolve

by Terri Cook 5 January 201827 October 2021

Radar satellite imagery can be used to measure constructional changes in the topography of long-lived volcanoes, according to a new study of Ecuador’s El Reventador volcano.

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Features from AGU Publications

Research Spotlights

Tracing Black Carbon’s Journey to the Ocean

11 July 202510 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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