California has some of the most distinctive and unique geology in the United States. It is the only state with all three types of plate boundaries, an extraordi

Donald R. Prothero's science books combine leading research with first-person narratives of discovery, injecting warmth and familiarity into a profession that h

The marine Eocene-Oligocene transition of 34 million years ago was a critical turning point in Earth's climatic history, when the warm, high-diversity "greenhou