Takes you down into the murky world of sharks and their relatives, reveals what motivates these fascinating creatures, and dispels some myths about their behavior. Discover a shark that can fit in your hand and a shark that eats only plankton--and learn that not all sharks are killing machines.

Takes you deep into the waters of the world to discover some of the most exotic creatures in nature. Take the plunge from dazzling coral reefs to the darkest depths to meet fish--a vast and varied group of animals.

Learn about the forces inside the Earth that cause volcanoes to erupt and earthquakes to shake the landscape.

Learn amazing facts about rocks, gems, and the Earth itself.

Looks at dinosaurs and their place in geological history, and how paleontologists discover their bones, reconstruct their lives, and sepculate on their demise.

See how different types of weather form and the effect that climate has on our world. Part of the 'Eyewitness' video series.

Learn about the forces inside the Earth that cause volcanoes to erupt and earthquakes to shake the landscape.

A mixture of animation and live footage serves as a background for a narrated introduction to the geographical history of deserts, their animal life and their importance for human culture.

Traces the history of dogs from their origins to their domestication and describes various species of dogs.

Investigates the double life of creatures that live both on land and in water. Leap into the fascinating world of frogs, toads, and salamanders, and get a close-up look at the amazing variety of colors, shapes, and sizes in the amphibian family.