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Codi Lazar is a Professory of Geology at California State University San Bernardino and a passionate and utterly hilarious geologist. In this episode, we get into the weeds talking about a wide variety of topics such as how limestone forms, why some plants might be restricted to it, what "serpentinite" is, what's in story for the state of Nevada in the next few dozen million years, how related the granite that's beneath Joshua Tree National Park might be to the granite in the Sierra Nevadas (very), the former love affair between the African continent, Scottland, Newfoundland and Appalachia, and much more.