Back from the Dead • 2017 • episode "S1E8" • Great Lakes Wild

58:01

With a million species at risk of extinction, Sir David Attenborough explores how this crisis of biodiversity has consequences for us all, threatening food and water security, undermining our ability to control our climate and even putting us at greater risk of pandemic diseases. Extinction is now happening up to 100 times faster than the natural evolutionary rate, but the issue is about more than the loss of individual species. Everything in the natural world is connected in networks that support the whole of life on earth, including us, and we are losing many of the benefits that nature provides to us. The loss of insects is threatening the pollination of crops, while the loss of biodiversity in the soil also threatens plants growth. Plants underpin many of the things that we need, and yet one in four is now threatened with extinction. Last year, a UN report identified the key drivers of biodiversity loss, including overfishing, climate change and pollution. But the single biggest driver of biodiversity loss is the destruction of natural habitats. Seventy-five per cent of Earth's land surface (where not covered by ice) has been changed by humans, much of it for agriculture, and as consumers we may unwittingly be contributing towards the loss of species through what we buy in the supermarket. Our destructive relationship with the natural world isn’t just putting the ecosystems that we rely on at risk. Human activities like the trade in animals and the destruction of habitats drive the emergence of diseases. Disease ecologists believe that if we continue on this pathway, this year’s pandemic will not be a one-off event.

2020 • Nature

58:08

Grasslands cover one quarter of all land and support the vast gatherings of wildlife, but to survive here animals must endure the most hostile seasonal changes on the planet. From Asia's bizarre-looking Saiga antelope to the giant anteaters of Brazil, grassland animals have adapted in extraordinary ways to cope with these extremes. In the flooded Okavango, lions take on formidable buffalo in epic battles, on the savannah bee-eaters take advantage of elephants to help catch insects and, on the freezing northern tundra, caribou embark on great migrations shadowed by hungry Arctic wolves.

S1E5 • Planet Earth II • 2016 • Nature

53:04

The Namib Desert is one of the oldest of all. It’s also one of the most diverse. With 50-degree temperatures and half a millimetre of rainfall annually, how is this possible?

S1E2 • Eden Untamed Planet • 2021 • Nature

54:11

In the Pacific, the quest to multiply has spawned a stunning array of unusual behaviors and adaptations. There are forest penguins with a tenuous marriage, the secret rendezvous of great white sharks, and the tale of male pregnancy.

S1E4 • Big Pacific • 2017 • Nature

50:51

Giant insects once dominated the earth before the dinosaurs. Thanks to new technologies combining genetics, ethology, geology and even particle physics, paleontologists can now recreate the missing branches of the tree of life. Assumptions have been shattered and all the rules are changing.

S1E1 • Ancient Earth: Series 2 • 2018 • Nature

48:34

As snails surf the waves in pursuit of a meal, how do the tides create opportunities for marine life?

S1E7 • Blue Planet I • 2001 • Nature