A Global Warning?

They are giants—stretching more than 300 feet above the ground, with hidden gardens and mysterious predators thriving within their canopy. National Geographic reveals the unexplored environment of the California redwoods in an epic, year-long exploration. Obsessive redwood climber Steve Sillett of Humboldt State University explores their massive crowns, discovering new record-breaking trees, while escaping falling branches and crashing trees in the process. Down below, National Geographic Explorer-in-Residence Mike Fay charts the redwood range to size up the past and future of these primeval trees threatened in 21st century California.

Re-examines the dramatic events of Boxing Day 2004, and investigates the new science of Tsunami forecasting.

When a Mongolian nomadic family's newest camel colt is rejected by its mother, a musician is needed for a ritual to change her mind.

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

A look at the state of the global environment including visionary and practical solutions for restoring the planet's ecosystems. Featuring ongoing dialogues of experts from all over the world, including former Soviet Prime Minister Mikhail Gorbachev, renowned scientist Stephen Hawking, former head of the CIA R. James Woolse

Exploring one of the most devastating but little-known disasters in London's history, this documentary reveals the shocking events that unfolded during the fateful Thames Flood of 1928.

Tippi is no ordinary child. She believes that she has the gift of talking to animals and that they are like brothers to her. 'I speak to them with my mind, or through my eyes, my heart or my soul, and I see that they understand and answer me.' Tippi is the daughter of French filmmakers and wildlife photographers, Alain Degre and Sylvie Robert, who have captured her on film with some of Africa's most beautiful and dangerous animals. Tippi shares her thoughts and wisdom on Africa, its people and the animals she has come to know and love. Often her wisdom is beyond her years, and her innocence and obvious rapport with the animals is both fascinating and charming.

Sheds light on an alternative approach to farming called “regenerative agriculture” that could balance our climate, replenish our vast water supplies, and feed the world.

This documentary explores an unknown civilization of the Brazilian Amazon, who risk their lives to protect their forest. In order to save the exploitation of the environment by big corporations, they have to create legal institutions.

Smart as a Fox is a 1946 short documentary film supervised by Gordon Hollingshead. In this short film, a fox cub experiences life in the forest. It was nominated for an Oscar for Best Live Action Short, One-Reel.

Four years after the devastating Gorkha earthquake, the people of Nepal still live everyday with the problems the world left behind.