David Attenborough journeys to both Polar Regions to investigate what rising temperatures will mean for the people and wildlife that live there and for the rest of the planet. David starts out at the North Pole, standing on sea ice several metres thick, but which scientists predict could be Open Ocean within the next few decades. The Arctic has been warming at twice the global average, so David heads out with a Norwegian team to see what this means for polar bears. He comes face-to-face with a tranquilised female, and discovers that mothers and cubs are going hungry as the sea ice on which they hunt disappears. In Canada, Inuit hunters have seen with their own eyes what scientists have seen from space; the Arctic Ocean has lost 30% of its summer ice cover over the last 30 years. For some, the melting sea ice will allow access to trillions of dollars worth of oil, gas and minerals. For the rest of us, it means the planet will get warmer, as sea ice is important to reflect back the sun's energy. Next David travels to see what's happening to the ice on land: in Greenland, we follow intrepid ice scientists as they study giant waterfalls of meltwater, which are accelerating iceberg calving events, and ultimately leading to a rise in global sea level. Temperatures have also risen in the Antarctic - David returns to glaciers photographed by the Shackleton expedition and reveals a dramatic retreat over the past century. It's not just the ice that is changing - ice-loving adelie penguins are disappearing, and more temperate gentoo penguins are moving in. Finally, we see the first ever images of the largest recent natural event on our planet - the break up of the Wilkins Ice Shelf, an ice sheet the size of Jamaica, which shattered into hundreds of icebergs in 2009.
We’ve heard that bees are disappearing. But what is making bee colonies so vulnerable? Photographer Anand Varma raised bees in his backyard — in front of a camera — to get an up close view. This project, for National Geographic, gives a lyrical glimpse into a bee hive — and reveals one of the biggest threats to its health, a mite that preys on baby bees in the first 21 days of life.
As the Ganges nears the sea, it joins its mightiest tributary the Brahmaputra, creating a vast flood-prone delta. Here the bustling cities of Calcutta and Dhaka meet the wetlands, home to giant lizards and snakes, huge mean-eating crocodiles and forests full of monkeys. This is a story of human life persisting in wildly variable conditions in a domain that is still the preserve of the royal Bengal tiger.
On the southern coast of Africa lies Algoa Bay--a protected refuge for the continent's only penguin species. Join them in their quest for survival as they brave unforgiving elements to build an unlikely marine community.
Watching the fascinating display of leafcutter ants at the Natural History Museum in London is one of my favourite ways to while away a few hours, but David Attenborough is operating on a much grander scale here in the last in the series. In Argentina he observes some cousins of the leafcutters who are part of a community so vast it spans an entire continent. It’s one of the mandible-dropping facts in a look at one of the key inventions of arthropods: colonies. From termites and honey bees to the leafcutters, it seems that if you want to get ahead, you move to the big city.
New Zealand was one of the last land masses to be found and settled by people. Lush and fertile, almost everything brought here flourishes, often with surprising consequences. Told through the experiences of its native species - in particular, a charismatic and peculiar giant, flightless parrot - this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.