Giants Fallen: The Destruction of Converse Basin Grove and its Giant Sequoias

How local fishermen transformed Cabo Pulmo into one of the world's greatest marine conservation success stories.

From microscopic plankton to billions of barrels of oil, few rock formations have shaped California's history more profoundly than the Monterey formation.

Lookout Mountain obsidian became prized toolstone, traded through Indigenous networks from the eastern Sierra to the Channel Islands.

Supervolcanoes, Hot Springs, Fumaroles, Yellow Lakes, and Other Geologic Wonders of Mammoth Lakes

An 18.6-year lunar cycle is expected to amplify tides just as rising seas push more of California’s coastline toward flooding thresholds.

A threatened population of green sea turtles is thriving in the concrete channels of the San Gabriel River in Long Beach.