The Galápagos Finches(1971)

Thunderbeast is a stunning insiders view of one of our country's most impressive wild creatures-the American buffalo. Working over a period of eight years, Emmy-award-winning wildlife filmmaker Bob Landis documented the real dramas of bison in Yellowstone National Park. From epic battles with grizzly bears and wolves, treacherous winters to late summer mating season, Thunderbeast captures the awesome survival skills of this American icon.

Personal accounts from the Alta actions in the years 1979 to 1981. Large police forces were deployed against the demonstrators. The dispute over the Alta river began as an environmental issue, but became a major turning point for the Sámi people's struggle for equal rights in Norway.

For two-thirds of the year, the Little Rann is a desert. Suddenly, in August, monsoon winds whip up the Arabian Sea and carry it 100 km inland. The desert and these mounds soon become islands and homes to high concentrations of rarely-seen, endangered and spectacular wildlife.

Every year, thousands of Antarctica's emperor penguins make an astonishing journey to breed their young. They walk, marching day and night in single file 70 miles into the darkest, driest and coldest continent on Earth. This amazing, true-life tale is touched with humour and alive with thrills. Breathtaking photography captures the transcendent beauty and staggering drama of devoted parent penguins who, in the fierce polar winter, take turns guarding their egg and trekking to the ocean in search of food. Predators hunt them, storms lash them. But the safety of their adorable chicks makes it all worthwhile. So follow the leader... to adventure!!

Bacteria, viruses, but also fungi, algae, pollen, and even insects: micro-organisms thrive and circulate constantly in our sky. How can so many living beings find their way into the air and circulate? How do they survive? And what influence do they have on our lives and the living world? Biodiversity, health, climate: it is only recently that scientists have begun to understand how this discreet aerial "plankton" affects our lives and our ecosystem. But despite their many virtues, some of these micro-organisms are now threatened by human activities. With the help of experts and 3D models, this scientific investigation plunges us into the heart of a still mysterious world, and reveals the diversity and fragility of the air we breathe.

The epic story of the life of a volcano, capable of both causing the extinction of all things and helping the evolution of species, over 60 million years.

The fearsome bat is amongst the stealthiest hunters in the Animal Kingdom, but for all their ingenious abilities, a species of grasshopper in the mountains of Bulgaria has learnt to outsmart them. Now, join a team of researchers armed with state-of-the-art ultrasonic cameras, as they discover the mechanisms behind this standoff. The Secret Life of Bats reveals the science behind sonar, and the hidden hunting challenges faced by this deadly predator.

A vivid journey into the mysterious subterranean world of mycelium and its fruit— the mushroom. A story that begins 3.5 billion years ago, fungi makes the soil that supports life, connecting vast systems of roots from plants and trees all over the planet, like an underground Internet. Through the eyes of renowned mycologist Paul Stamets, professor of forest ecology Suzanne Simard, best selling author Michael Pollan, food naturalist Eugenia Bone and others, we experience the power, beauty and complexity of the fungi kingdom.

Last May record temperatures provoked a GLOF or glacial lake outburst flood in northern Pakistan, sweeping away bridges and villages in the valley below the Shisper glacier. Higher up the mountains, a semi-nomadic people called the Wakhi were leading their yaks to summer pastures 15,500 feet above in the mountains. Their traditional lifestyle has also been heavily impacted by climate change. From the K2 and the Himalayas, we profile the scientists,mountain climbers, and the villagers on this global warming frontline.