David Attenborough sets the scene to the whole Saving Planet Earth season. It starts with David examining the impact of humans on the planet and ends with a live fundraising finale.

In Sharing Planet Earth, he takes a global look at the relentless battle for space as animals and humans struggle to live together. 'Our species has radically changed the landscape of the planet and now we have the power to exterminate a species or to preserve it. Saving planet Earth's wildlife has never been more urgent'

David shows some of the remote places he has visited during his extensive filming career. With only a quarter of the habitable planet considered wilderness, he examines the struggles for survival. David outlines the threat to the planet and urges us all to protect as much wilderness as possible.

He highlights the conflict that occurs as animals adapt when their wilderness disappears. In India, leopards walk into the bustling cities, and in Africa, elephants trample villagers and wreck crops.

Changes in agriculture have also taken their toll. GM Crops in north America's corn belt are destroying the habitat of the Monarch butterfly, whose caterpillars feed on milkweed. And we exploit our oceans with as much ruthless efficiency as we do the rest of the planet, fishing some areas to the point of total ecosystem collapse.

David concludes: 'we know we are using more than our fair share of the planet and its resourses and we must now redress this imbalance. Any effort to do so - no matter how big or small - is valuable if we wish to ensure a future that is healthy for all life on planet Earth'. Show less