Enter the harsh and unforgiving Kalahari and follow a lion pride attempt to save their threatened bloodline.

A high-tech autopsy on a Nile crocodile unlocks secrets behind its hunting prowess.

Ascension Island, a remote Mid-Atlantic outpost famous for its big game fishing, is under siege. Tiger sharks, hammerheads, even great whites, lured here every year by the bountiful reefs, are displaying aggressive behavior, culminating in the island's first shark attacks in its history. Join us as we dive into the mystery behind the altered behavior of these hungry predators, and explore whether efforts to bring this delicate ecosystem back into balance is a case of too little, too late.

We go behind the scenes and into the minds of artists as they capture, commemorate, and, at times, condemn our presidents.

A documentary which follows two lion brothers as they become rulers of a pride in Botswana after a battle for dominance.

Documentary which follows crocodile expert Brad Bestelink on a quest to dive with crocodiles without a cage or any other protection.

In the far reaches of the North, wolf and bear come head to head. Winter has been long. The melting ice reveal scattered carcasses in the Swamp: a feast worth fighting for. The bears must fatten up before Winter comes again, the wolves must strengthen their pack. The Swamp has been their battleground for decades, who will rule the North?

20 years after the TV Mini-Series "Tales of the Serengeti", our crew reunites to truly explore the Serengeti, with no fiction. We almost didn't survive it.

Spend three years in China's remote and inhospitable Tibetan Plateau, home to nearly all the world's snow leopards.

Honeybees are in crisis – but there is hope. Biologists are studying the estimated 20.000 bee species in the world to look for viable pollinators of our crops. In their quest they discover the marvellous world of bees: bees that live in flowers, invade other hives, produce perfumes – and pollinate our crops without us even realizing.

The history of the people and the planes that first broke the speed barrier in 1947 and the impact it has had on aviation and how we fly today.

A colorful portrait of Uganda's gamba Island Chimpanzee Sanctuary, a place where orphaned and rescued chimpanzees - victims of the illegal exotic pet and bushmeat trades - are given a second chance at life in a community of chimps.

This is the story of a cheetah born into the Linyanti cheetah coalition. He is the runt of the litter and will have to fight hard for every scrap of food and attention to survive.

Smithsonian Institution scientists race against time to save endangered frogs from a deadly fungus that is ravaging amphibians worldwide.

Roughly 20 miles off the coast of west Africa, sits a volcanic relic now completely blanketed in equatorial rainforest: the island of Bioko. It's home to some very rare species, including the drill -- one of the most endangered primates in the world. Join us on a jungle expedition as we uncover the secret life of these reclusive primates and track down the seasonal migration of the goby -- a plucky fish battling its way upriver past strong currents, deadly predators, and even a 100-foot waterfall, to reach the spawning grounds of its youth.

Peek at the first hours of three tiger cubs to their first swim at the National Zoo.

A visually stunning portrait of one of nature's most agile and fearsome predators, the Goshawk. This secretive bird of prey can be hard to see in the UK, but reigns supreme in Korea's mountains.

During the rainy season in Africa, a herd of buffalo can create thousands of pounds of waste in a day, which would be an environmental disaster if not for the dung beetle. These extraordinary insects depend on waste to survive. They eat it, attract mates with it, and raise families in it. Although dung beetles are critical to the ecosystem, they don't have it easy. Every day, they must avoid being trampled, evade predators like bullfrogs, honey badgers, and rock monitor lizards, and rival dung beetle families desperate for the same fecal prize.

The uncommon sight of polar bears wandering a colorful landscape during an iceless summer in Hudson Bay, Canada.