National Geographic cameras travel to Iceland, Africa, Japan, California, and Greece to record how the huge plates of the earth's crust crash together, pull apart, and override each other causing earthquakes and volcanic eruptions. Follow scientists around the world as they search for clues to the causes of these powerful geologic events.

Venture into the dense forests of coastal Siberia to track the biggest cat on earth, the elusive Siberian tiger.

A remarkable insider's look at what it takes to climb the highest, most dangerous mountain on Earth-- Mount Everest.