“We are facing a crisis”, he warns at the start, “and one that has consequences for us all.”
What follows is a shocking reckoning of the damage our species has wrought on the natural world.
There are the stunning images of animals and plants you would expect from an Attenborough production, but also horrific scenes of destruction. In one sequence monkeys leap from trees into a river to escape a huge fire. In another a koala limps across a road in its vain search for shelter as flames consume the forest around it.