Broadcast (2010) Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish and more than 350,000 species of beetles. What explains this explosion of living creatures, 1.4 million different species discovered so far, with perhaps another 50 million to go? The source of life's endless forms was a mystery until Charles Darwin's revolutionary idea of natural selection, which he showed could help explain the gradual development of life on Earth. But Darwin's radical insights raised as many questions as they answered.

Broadcast (2006) In a stunning six-part miniseries narrated by stage and film actor Liev Schreiber, this Nature series presents a compelling new vision of the epic forces that have shaped every aspect of existence on our planet, in Triumph of Life. More than three years in the making, Triumph of Life combines dramatic storytelling with powerful, groundbreaking scientific ideas in a sweeping story about survival and the survivors - the winners, for the moment at least, in an eternal battle. (

Broadcast (2002) For the first time ever, scientists believe they have gathered substantial evidence that points to a single animal group of creatures that gave rise to all animals, including humans. Researchers such as Cristina Diaz and Mitch Sogin think that the most likely candidate for this "Animal Eve" is a group of creatures that still exist: the sponges. Sponges, members of the phylum Porifera, are considered the oldest living animal phylum. The name Porifera means "pore bearer" in Latin. Sponges are the only animals that if broken down to the level of their cells can miraculously reassemble themselves. These seemingly inanimate creatures are also fantastic pumps, filtering tons of water to harvest a few ounces of food. (

Broadcast (1989) Could a pterodactyl as large as a light aircraft have flown? Did millipedes once grow to six feet long? How did insects become preserved in amber for over 50 million years? All these questions and more are answered through the study of fossils. In his journeys to the most famous fossil sites in the world, David Attenborough discovers a pre-historic world teeming with life and full of enticing clues as to how life evolved. They reveal how dinosaurs hunted, lived in groups and cared for their young.

Broadcast (2002) When we think of animals, we think of movement. Surprisingly, the diverse and graceful ballet of animal movement may have started with cnidarians (pronounced "ny-DAIR-ee-ans), a group that includes corals, sea anemones, sea pens and jellyfish. All of these animals, with few exceptions, have nerves and muscles. Because cnidarians are the simplest animals to possess this complexity, their direct ancestors were very likely the first animals to bundle the power of nerves and muscles together, enabling them to move and exhibit discernible behavior. (

Broadcast (2009) Documentary telling the little known story of how Darwin came to write his great masterpiece, On the Origin of Species, a book which explains the wonderful variety of the natural world as emerging out of death and the struggle of life. The story is told with the benefit of Darwin's secret notes and correspondence, enhanced by natural history filming, imagery from the time and contributions from leading contemporary biographers and scientists. It took twenty years to develop a brilliant idea into a revolutionary book that changed the way we see the world.

Broadcast (2002) Behind the beautiful shapes and colors of seashells is the story of how a group of animals called molluscs evolved in order to survive. The wide variety of molluscs includes clams, oysters, snails, mussels, squid, and octopus. The word mollusc comes from Latin meaning "soft," a good description of the group's fleshy bodies. Of course, in an ocean filled with predators, a soft body is easily eaten.

Broadcast (1998) Most of the dry land on Earth sits no more than a few hundred metres above sea level. But in some places mountain belts rise to heights of several kilometres.These regions are often prone to devastating earth tremors. How are mountains formed and what is the connection with earthquakes? The answer may lie in the fluid-like properties of the Earth's outer layers. According to a new theory, mountains may flow up or down when continents collide. In the process they affect the circulation of the planet's atmosphere and change the climate. (

Broadcast (1998) Over the past 4 billion years, life has evolved from simple single celled organisms into the tremendous variety of plants and animals that exist today. As scientists learn more about the Earth's history, they are realizing that the forces which have shaped the planet have also had a profound effect on the course of evolution. The movement of the tectonic plates has rearranged the continents, providing ever-changing conditions for living organisms, stimulating the evolution of new life-forms.

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