Each year at remote wilderness locations around the world, astonishing seasonal events take place that reveal the awesome power and grandeur of the planet's rich natural diversity. The six-hour series features explosive events of nature triggered by seasonal change and vast climate change. The series reunites BBC and Discovery Channel -- co-producers of PLANET EARTH, the most lauded natural history series in television history.

Each episode of NATURE'S GREAT EVENTS focuses on a different natural event: the summer melt of ice in the Arctic, the annual salmon run in Canada, the flooding of the Okavango Delta in Africa, the huge annual bloom of plankton in the northern Pacific, the massive migration in East Africa's Serengeti plain, and one of the greatest marine spectacles on the planet -- the sardine run in South Africa. Filmed in 2007 and 2008, the series spotlights the incredible transformation of these wildly different landscapes and the intimate stories and dramatic interaction between the animals who occupy them, including some of the most dramatic wildlife confrontations and clashes ever recorded on film.

Episodes feature polar bears battling climate change; grizzly bear cubs emerging from winter dens to hunt salmon alongside equally hungry wolves; elephant herds struggling against drought and predators; one of the largest ocean feeding frenzies on the planet involving thousands of sharks, whales, dolphins, seals and enormous flocks of birds; and many more compelling scenes from the natural world.

To immerse viewers in never-before-seen details and perspectives, NATURE'S GREAT EVENTS put to use innovative filming techniques and technologies utilized to acclaim for PLANET EARTH. Filmmakers employed time-lapse, ultra slow-motion, and macro photography, as well as newer technologies that allowed for filming under the toughest situations, such as rough seas and challenging flying conditions. But the series also depended upon the production team being in the right place at the right time -- often, teams lived in extraordinarily remote areas for up to two months, simply waiting for the perfect shot.

NATURE'S GREAT EVENTS is a BBC/Discovery Channel co-production. For BBC, the executive producer is Brian Leith and series producer is Karen Bass. For Discovery Channel, executive producer is Susan Winslow.

NATURE'S MOST AMAZING EVENTS is the alternate US title to NATURE'S GREAT EVENTS, airing in the US beginning 29 May 2009.

• Discovery Channel - Nature's Most Amazing Events
• Wikipedia
• BBC: Nature's Great Events