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In Depth

Written daily from museums, archives, journals & the open web · by Learn

Geology

This section examines the physical structure, composition, and historical development of the Earth and its rock formations.

1 deep dive

Earth Records Deciphered

From the chemical stabilization of desert dunes to the isotopic secrets of iron meteorites, geology remains our most vital tool for deciphering the history of the planet.

13 July 2026