Because, as Attenborough so directly puts it, human beings have overrun the world.

Why is this a problem?

And unfortunately, it’s not all positive.

Sir David Attenborough

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We learnt how to tame the wild.

Get more from the environment.

Our population boomed, as did our demands, Attenborough narrated in a separate Netflix documentary,Our Planet.

Blurred Out Crowd of People

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Every time a new problem arose we solved it, altering Earths entire surface in the process.

The tables have turned.

We now determine natures survival.

Elephants in Africa

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It was a drastic change from his carefree earlier years of travelwhen wilderness was truly wild.

Now, he’s very blunt in his view of the state of the planet.

Weve not just ruined the planet, weve destroyed it, he toldNew Scientist.

Penguins Leaping Off an Iceberg

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Our planet is becoming less wild.

In the last 50 years, the populations of wild animals have reduced by 60%.

Weve replaced them with ourselves and our domesticated animals and plants.

Theres very little wild left.

This biodiversity loss is not just a tragedy, its the single biggest problem we face.

With Attenborough’s reputation behind it, there’s hope that the message will get through.

And though he feels that Earth is currently in disrepair, there is still hope.

This will allow humans to use less space to produce food and reduce deforestation, among other benefits.

Lastly, he advises fostering wild populations whenever possible, including on unused land and even in the city.

David Attenborough’s new documentary gives a stark warning about the state of the planet.