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Sonia Tikoo

Associate Editor, JGR: Planets

Photo of Mars' surface.
Posted inEditors' Highlights

Explaining Mars’ Mysteriously Magnetic Crust

by Sonia Tikoo 13 March 202513 March 2025

Fluid-rock interactions on ancient Mars may have produced abundant magnetic minerals that preserved unusually intense records of the planet’s now-extinct magnetic field.

Photos of Martian meteorite NWA 7034.
Posted inEditors' Highlights

Hand Magnets Destroy the Magnetic Record of Meteorites

by Laurent G. J. Montési and Sonia Tikoo 30 May 202324 May 2023

Meteorite collectors often use strong magnets for classification, but this approach destroys crucial evidence of processes active in the early solar system.

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.

Features from AGU Publications

Research Spotlights

Watershed Sustainability Project Centers Place-Based Research

4 December 20254 December 2025
Editors' Highlights

Changes in Slab Dip Cause Rapid Changes in Plate Motion

4 December 20252 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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