This program explores clues gathered from ancient rocks and meteorites in an attempt to piece together how our planet formed, what happened during its earliest days, and when life first appeared. The program includes visits to the scene of a fresh fall of meteorites, several volcanic eruptions, and an underwater glimpse of molten "pillow" lava as it oozes out of volcanic vents in the sea floor.

When Mt. St. Helens erupted earlier this year, it focused the attention of the whole world on the almost incredible destructive forces that volcanos can release. Geologists from around the world congregated at the volcano and NOVA joined the vigil for an in-depth look at the incident and its aftermath.