A video explaining Yellowstone's supervolcano and why its overdue for an eruption.
A video on rock falls (when huge slabs of granite break off from a cliff) in Yosemite. Since the glaciers retreated around fifteen thousand years ago, rock fall has been the major force of change in Yosemite Valley. Geologists work to understand this force of nature in order to protect the millions of visitors who come here each year.
The tropical islands that make up Hawaii are collectively one of the youngest geological formations on the planet. This video shows how Hawaii was formed.
Reviews areas of geologic interest in the Western United States.