Humans are a "plague on the Earth", according to naturalist and documentary-maker David Attenborough.
Attenborough told Britain's Radio Times that humanity must limit population growth or "the natural world will do it for us".
"We are a plague on the Earth. It's coming home to roost over the next 50 years or so," the renowned conservationist warned.
"It's not just climate change; it's sheer space, places to grow food for this enormous horde."
The 86-year-old said human population growth needed to be curbed.