Traveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made of...other humans.
On the second leg of their journey, wildlife filmmakers Gordon Buchanan and Justine Evans, along with a team of scientists, head deep into the mountains of western Burma. This is where they hope to find the shy sun bear and two of the world's rarest and most beautiful cats: the Asian golden cat and the clouded leopard. Meanwhile, zoologist Ross Piper and the science team are on a mission to create a wildlife survey to present to the government of Burma to persuade them that these forests are so unique they must be protected. High on the forest ridges, Gordon finds evidence to suggest that Burma's wildlife might be in danger. Undercover filming in a border town known as the 'Las Vegas of the jungle' leads to a shocking discovery.
Canada's Devon Island is the largest uninhabited island in the world--and with good reason. Temperatures below freezing for nine months of the year and an annual rainfall comparable to the Gobi Desert leave the icy landscape so barren that NASA uses it to simulate conditions on Mars. Take an exhilarating expedition into a land where only the most experienced Inuit hunters dare set foot.
Begins in northern Norway, 500 kilometres north of the Arctic Circle. Here, there is only just enough light for the pine trees to survive, but it is extremely cold during the winter. Pine cone seeds provide one of the few foods available at this time of year, and large herbivores such as the moose must also rely on their fat reserves.