High-speed cameras capture hummingbirds as they mate, fight and raise families.
Wildlife cameraman Vianet Djenguet discovers an "African Eden" in his homeland, the Congo, and finds a jungle tribe that reveres his great-grandfather.
A man, his family and a group of volunteers journey across Uganda and the Nile River to relocate a herd of the world's rarest giraffes.
How the first cats arose in Asia and eventually came to conquer Africa; an in-depth look at lions, servals, caracals, cheetahs, tigers, fishing and sand cats.
Cats in the Americas, including the rise of domestic cats; an in-depth look at the jaguar, urban mountain lion, ocelot, Canada lynx, margay, siamese cat and the sphynx.
From the penguins of Antarctica to the bison of Yellowstone National Park, animals around the world adapt and survive during winter.
Global changes affect the wilderness of the Yosemite Valley in the Sierra Nevada mountains of Northern California.
Puerto Rico's natural history is seen through the work of conservationist Tony Mignucci and his dedication to save the Caribbean manatee from extinction.
Giant armadillos dig new burrows each night in the Brazilian rain forest.
The regeneration and transformation of the unmanaged forests of the Kalkalpen National Park in Austria, the largest wilderness area in the Alps.