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California

Transmission lines in the Mojave Desert
Posted inNews

Power Outages, PG&E, and Science’s Flickering Future

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 29 January 202012 December 2022

As lawmakers debate planned power outages as a Band-Aid to the nation’s wildfire problem, science hangs in the balance.

Aerial photo of a desert road offset by 2.5 meters
Posted inFeatures

Scientists Scramble to Collect Data After Ridgecrest Earthquakes

Katherine Kornei, Science Writer by Katherine Kornei 11 December 20196 October 2021

Ground shaking in Southern California, including a magnitude 7.1 temblor, triggered a massive mobilization effort to collect seismological, geological, and geodetic data.

Black-and-white photo of geologist Clyde Wahrhaftig, looking like a beatnik
Posted inNews

The Layered Legacy of Clyde Wahrhaftig

Korena Di Roma Howley, Science Writer by Korena Di Roma Howley 6 December 20193 November 2022

As the geologist’s beloved guidebook gets a digital makeover, his personal contributions to the field shed light on who he was as a scientist.

Photo of palm trees with lots of dead fronds in canyon in Alvarado Creek
Posted inNews

Iconic Palms Add to Fire Danger in Southern California

Megan Sever, Science Writer by Megan Sever 22 November 20196 October 2021

As fires burn across Southern California, researchers examine what role nonnative vegetation plays.

A collapsed portion of freeway after the Loma Prieta earthquake
Posted inNews

California Launches Nation’s First Earthquake Early Warning System

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 24 October 20196 October 2021

The country’s first publicly available, statewide warning system could give California residents crucial seconds to duck and cover before a quake.

Side view of individual trees generated in a lidar image
Posted inNews

The Bigger They Are, the Harder They Fall

Richard Sima, freelance science writer by Richard J. Sima 18 October 201924 March 2023

New research tracking 1.8 million trees found that tall trees died at more than twice the rate of smaller ones toward the end of extreme and persistent drought.

High population density, a potential for large earthquakes, and basins that amplify seismic waves put downtown Los Angeles at risk
Posted inScience Updates

Exposing Los Angeles’s Shaky Geologic Underbelly

by R. W. Clayton, P. Persaud, M. Denolle and J. Polet 10 October 201928 October 2022

Current calculations might underestimate the susceptibility of Los Angeles to earthquake shaking, so researchers and volunteers are deploying seismic networks near the city to remedy a data shortage.

Green and brown pine trees in a forest
Posted inNews

Foretelling Forest Death from Above

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 7 October 20191 March 2023

A satellite-based early-warning signal may spot the start of a forest’s decline and give forest managers more time to save its life.

Satellite image of the central California coast with wildfire smoke
Posted inNews

Golden State Blazes Contributed to Atmospheric Carbon Dioxide

Rachel Crowell, Science Writer by Rachel Crowell 27 September 201913 February 2023

A new case study investigates causes and effects of California’s 2017 wildfire season.

Map of southern California showing relationship between observed foreshock prevalence and magnitude of completeness
Posted inEditors' Highlights

Most Southern California Mainshocks Follow Foreshocks

by G. P. Hayes 19 September 20196 October 2021

New research using a highly complete earthquake catalog shows that 72% of M4+ mainshocks are preceded by foreshocks, implying that foreshock activity is much more prevalent than previously thought.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

As Wildfires Increase in the West, So Does Suppression Spending

10 June 202610 June 2026
Editors' Highlights

Multi-Scale Fault Roughness Encapsulated in a Friction Law

11 June 202611 June 2026
Editors' Vox

Small-Scale Indian Ocean Dynamics Underpin Marine Ecology and Climate

4 June 20263 June 2026
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