Summer Meadow

Lost Worlds looks at untouched aspects of nature in parts of the world where humans rarely tread. From plants, to animals, to geology, this artfully photographed documentary presents facets of the biological world that you are not likely to see anywhere else.

Costa Rica's motto is Pura Vida - Pure Life - and this deceptively small country is bursting with some of the most spectacular wildlife and pristine ecosystems in the world. All this diversity thrives, in part, thanks to one surprising little creature: hummingbirds. Venture across Costa Rica's wild and rugged landscapes, from volcanic peaks to coastal jungle to misty cloud forests and discover the nation's dazzling diversity of hummingbirds. Watch how these tiny birds play an outsize role in maintaining some of the richest and wildest environments on Earth, where a whole community of creatures, such as macaws and monkeys, enjoys The Hummingbird Effect.

There's a gang war happening in the Luangwa Valley in Zambia, a battle among hippos for territory, dominance, mating rights, and survival. The reason? Dry season: a seven-month drought that forces over 30,000 hippos to the deepest part of the river to stay wet and cool. Follow these three-ton beasts as they fight lions, crocodiles, and other hippo gangs, struggling to stay alive until the next rainfall. Only then can they return to the lush paradise they once called home

An intimate look at the Woodstock Music & Art Festival held in Bethel, NY in 1969, from preparation through cleanup, with historic access to insiders, blistering concert footage, and portraits of the concertgoers; negative and positive aspects are shown, from drug use by performers to naked fans sliding in the mud, from the collapse of the fences by the unexpected hordes to the surreal arrival of National Guard helicopters with food and medical assistance for the impromptu city of 500,000.

Deep Blue is a major documentary feature film shot by the BBC Natural History Unit. An epic cinematic rollercoaster ride for all ages, Deep Blue uses amazing footage to tell us the story of our oceans and the life they support.

A look at the extraordinary abilities of squirrels, from the brainy fox squirrel to the acrobatic gray squirrel to the problem-solving ground squirrel.

Sir David Attenborough narrates a documentary about the Kea, the world's only alpine parrot. Playful and destructive, it attacks cars, starts landslides and terrorises New Zealand ski resorts but behind the bad behaviour there's a sharp mind at work. David tries to play chess with a kea and discovers how its cheeky character is the key to its survival.

Two teenagers and their adventures in the breathtaking scenery of lake Saimaa.

Genuine connections between children and nature can revolutionize our future. But is this discovery still possible in the world's major urban centers? The new chapter of "The Beginning of Life" reveals the transformative power of this concept.