This segment looks at the advantages and disadvantages of swarm fish and loner fish, providing insight into their coloration and behavior. Spectacular footage reveals twobar sea bream, trumpet fish, barracudas, and harlequin sweetlips.

Green sea turtles (the largest hard-shelled sea turtle) and whale sharks (the largest shark and fish overall) are featured in this segment. We also encounter a langouste, otherwise known as a rock lobster, and a moray eel lurking in their coral reef habitat.

We learn about the thousands of kilometers that humpback whales travel from their summer habitat in the polar regions to the tropical or subtropical waters where they spend the winter. Their multi-versed songs and the markings on their flukes are also discussed.

Marine mammals are the focus of this segment on coastal sea life. Humpback whales mostly swim along the coasts, whether in the Northern or Southern Hemisphere. Seals are semi-aquatic and try to stay as close to the coast as possible, though they'll search for prey in depths of up to forty meters.

California sea lion communication, mating habits, and past and present threats to their survival are discussed. This segment additionally features amazing aerial photography of their rocky coastal habitats.

The video starts with information about coastal geology and the evolution of birds. It includes amazing footage of white storks, wildebeest, as well as zebras in East Africa's Serengeti region.

The focus of this segment is on animals of the African savanna. We get to see giraffes and elephants, the largest of the land creatures, as well as cheetahs, the fastest.

Rhinoceroses, or rhinos for short, are the largest land animals after elephants. Five species remain (two in Africa and three in Asia) and all are endangered as a consequence of the illicit trade of their horns. The importance of rivers is another focus of this segment.

The series draws to a close with footage of apes, the most direct ancestors of humans. The narrator nicely sums up the meaning of evolution and man's place in nature.

Browse through the Evolution Store in the Soho district of New York City and enjoy countless unique articles from the natural world they have for sale!

A greeting by Michael Reynolds, Earthship Biotecture and THE Garbage Warrior. See more at garbagewarrior.com – and order the DVD.

The conflict in the Sudanese province of Darfur has displaced more than two million people and cost nearly 400,000 lives. To raise international awareness, George Clooney and his father, Nick Clooney, visit the region and report their findings in this videos.

In this second part of George Clooney’s video diary from Sudan and Chad, he interviews Jillian, a woman who helped to start a refugee camp in Chad.

This is George Clooney’s third and final installment. One man expresses his opinion that UN action is necessary to resolve this humanitarian crisis. Finally, we hear another segment of his interview with Jillian, who recounts the humiliation that women, in particular, are suffering at the hands of the Janjaweed militia.

George Clooney and his father Nick joined members of Congress and activists at the Sudanese Embassy in Washington, D.C., calling on the government of Sudan to end its indiscriminate bombing campaign against people in the Nuba Mountains and restore humanitarian access immediately. A video by The Enough Project