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Katherine Kornei, Science Writer

Katherine Kornei

Katherine Kornei is a freelance science journalist covering Earth and space science. Her bylines frequently appear in Eos, Science, and The New York Times. Katherine holds a Ph.D. in astronomy from the University of California, Los Angeles.

A reddish planet appears with a blue ocean covering most of its upper half
Posted inNews

Buried Sediments Point to an Ancient Ocean on Mars

Katherine Kornei, Science Writer by Katherine Kornei 26 March 202526 March 2025

Ground-penetrating radar data collected by the Zhurong rover reveal gently sloping sediments in Mars’s northern lowlands that hint at a shoreline.

A container ship in a narrow channel of water
Posted inNews

Panama Canal Logistics Are at the Mercy of Weather and Climate

Katherine Kornei, Science Writer by Katherine Kornei 12 February 202513 February 2025

Regional weather variability and climate change make operating the canal a challenge.

Aerial view of a large, flat body of water among some mountain ranges
Posted inNews

The Deleterious Dust of the Salton Sea

Katherine Kornei, Science Writer by Katherine Kornei 30 January 202530 January 2025

Coarse particulate matter deriving from California’s largest lake is linked to an increased risk of respiratory-related hospitalizations.

A top-down view of green and brown land with a roughly circular depression with a blue lake in the middle
Posted inNews

Ice Core Records Shed Light on a Volcanic Mystery

Katherine Kornei, Science Writer by Katherine Kornei 29 January 202529 January 2025

By analyzing sulfur and volcanic ash entrained in ice cores, researchers pinpointed a caldera in the remote Kuril Islands as the site of an unidentified 19th century eruption.

A rainbow-hued image of the Moon; different colors correspond to different elevations. The surface is covered in circle-shaped craters.
Posted inNews

Meteorite Sheds Light on the Moon’s Impact History

Katherine Kornei, Science Writer by Katherine Kornei 6 December 20246 December 2024

Analysis has revealed the South Pole–Aitken basin is significantly older than other impact basins on the Moon, a finding that has implications for the evolution of the early solar system.

A spherical reddish planet with white ice at its base appears against a black background.
Posted inNews

Martian Meteorite Points to Ancient Hydrothermal Activity

Katherine Kornei, Science Writer by Katherine Kornei 22 November 202424 November 2024

The Red Planet had water—in the form of a hydrothermal system—4.45 billion years ago, new analyses of a Martian meteorite suggest.

The top of a conical volcano covered in snow appears against a blue sky
Posted inNews

Glaciers near Active Volcanoes Flow Faster

Katherine Kornei, Science Writer by Katherine Kornei 14 November 202414 November 2024

Monitoring glacier velocity could help predict volcanic activity, a study of more than 210,000 glaciers suggests.

A hand holds a disc of ice between thumb and forefinger while the person’s other hand points at it with the little finger. On a surface below, a ruler can be seen.
Posted inNews

Centennial-Scale Jumps in CO2 Driven by Earth’s Tilt

Katherine Kornei, Science Writer by Katherine Kornei 8 November 20248 November 2024

Antarctic ice records uncovered seven previously unknown jumps in atmospheric carbon dioxide. These events may have been driven by changes in Earth’s tilt.

Gravura em cobre de Lisboa, Portugal, durante o terramoto de 1755.
Posted inNews

Sedimentos Caribenhos Rastreados até o Terremoto e Tsunami Português de 1755

Katherine Kornei, Science Writer by Katherine Kornei 29 October 202429 October 2024

Arqueólogos escavando na Martinica encontraram por acaso o primeiro depósito de tsunami do terremoto encontrado no Novo Mundo. Ao que parece, o tsunami deixou um forte rastro, pois a onda passou por cima de um rio.

A road runs through a neighborhood; the road is warped and covered with black tarp and orange sandbags in some places.
Posted inNews

Rancho Palos Verdes Landslides Have Residents Seeking Science

Katherine Kornei, Science Writer by Katherine Kornei 3 October 20243 October 2024

Residents of Rancho Palos Verdes are looking to the scientific community for help in understanding the slow-moving landslides that are destroying their community.

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Features from AGU Publications

Research Spotlights

An Ecosystem Never Forgets

19 December 202519 December 2025
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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