David Attenborough warns that humans have 'overrun the world'

In a new film, A Life on Our Planet, the broadcaster rails against the imminent, man-made dangers behind the climate emergency

David Attenborough has warned that humans have "overrun the world" in a trailer for A Life on Our Planet, a forthcoming documentary looking at the changes on Earth during his lifetime.

The 93-year-old naturalist and broadcaster describes the project as a "witness statement" of the effects of the climate crisis, adding that the actions of humanity are sending the planet into decline.