Since the Earth's creation 4.5 billion years ago, the planet has been struck by a series of catastrophes, each pushing life to the edge of extinction. Again and again, dinosaurs found themselves victims of these catastrophes, but from each disaster came new life. While a dominant species was wiped out, hardier creatures survived and thrived, moving into the vacuum left by the extinction. In turn, these gigantic creatures took over the planet until...

Featuring eyewitness testimony, Nova takes an in-depth look at what made Hurricane Katrina so deadly and analyzes how, despite technically sophisticated flood and storm defenses, this event has resulted in unprecedented destruction for the Gulf Coast. In less than 12 hours on August 29, 2005, Hurricane Katrina devastated the Louisiana coast, leading to more than a thousand deaths and transforming a city of over one million into an uninhabitable swamp....

National Geographic goes inside the eye of the superstorm, Hurricane Sandy, to explore why it happened and how it could happen again. Weaving together user-generated stories from those who rode out the catastrophic storm, first responders, weather experts and storm chasers, Superstorm 2012 explores the mammoth and merciless wake that caused fatalities and paralyzed life for millions of people.

A grandview of the universe as we understand it and of how we think it will evolve in the next millennium. Uses state-of-the-art 3-D graphics to illustrate the structures of the Big Bang to the anatomy of the Sun.

Disc 1: How the earth was made. Examines the origin and geological evolution of the earth, focusing on the various cataclysmic transformations that occurred through time. Disc 2 : A global warning? The History Channel answers the question: After 650 million years of climate change, is global warming simply a naturally occurring phenomenon, or the result of human activity? Disc 3 : Life after people. What will the world be like when mankind is...

Secrets of the Manor House looks beyond the fiction to the truth of how life was in these ancient British houses, and how mounting financial, political and social pressures were about to bring momentous changes to both the wealthy and their servants.

With stunning footage and cutting-edge technology, National Geographic explores the human body from the inside out as never before. Four classic programs look at how the incredible human machine works, from the miraculous in-utero development of a fetus to the mechanics of a beating heart, and from the formation of skin to the amazing way complicated systems work together for sensing, adapting, reproducing, regenerating, and thinking.