Through the ages, man has depended on plants for everything from oxygen to food to building supplies. Gives a colorful tour of the world's most dazzling flora - from the most magical to the most bizarre. Watch buds burst, flowers bloom, and discover the myriad ways plants struggle to survive.

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

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

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

Explores the forces that shape our planet and affect our lives, from hurricanes to volcanoes. Rare footage reveals the Earth at its most violent.