Round Planet

Plunged into darkness for four months a year, the animals of the Arctic are a hardy bunch. Armstrong Wedgewood follows polar bears looking for love and new life and the Arctic fox as it searches for a meal while taking on some unlikely contenders.

Yellowstone National Park's spectacular landscape supports an array of wildlife, but this serene habitat also holds a dark secret. Armstrong Wedgewood follows the park's residents who thrive in a land of extremes, oblivious to the time bomb beneath them.

From hospitable sea-cucumbers to predatory starfish, Armstrong Wedgewood celebrates the ugly and unconventional killers of the deep. Despite these creatures working in almost invisible roles, they are vital in keeping the ocean's ecosystem in balance.

Armstrong Wedgewood follows the annual migration of the wildebeest as they journey across the Serengeti. On their route, these giants encounter lions, hyenas, giraffes and dung beetles -- each with a role to play in this very literal "circle of life."

Madagascar is an island of extremes and a varied habitat where one side is "wetter than an otter's pocket" and the other "dryer than a camel's hoover bag." Armstrong Wedgewood checks out how diversity in landscape leads to wildlife with unique evolutions.

Veteran broadcaster Armstrong Wedgewood has visited the Antarctic many times over, experiencing the highs and lows of life on the ice. To his eyes, the penguins of this frigid landscape are the symbol for soldiering on in the face of adversity.

Isolated from the wider world, life on islands often evolves some weird and wonderful survival solutions. Armstrong Wedgewood explores a cast of island odd-balls who have adapted to overcome the challenges of their remote habitat.

From Central Africa to Sumatra, Armstrong Wedgewood explores the complex culture, society and intelligence of mountain gorillas, chimpanzees, bonobos and orangutans while drawing parallels with the behavior of these huge primates and human society.

Rain forests are some of the planet's oldest ecosystems, and over a third of Earth's animals and two thirds of its plant species are found in these wet habitats. Armstrong Wedgewood reveals the diversity of creatures found in forests across the world.

Bears are contrary animals, and while they may be some of the planet's largest predators, they rarely pick on anything their own size. Armstrong Wedgewood explores how and why these giant mammals choose to survive on tiny morsels.