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'We Can Save Earth' - David Attenborough Gives World Leaders A Lesson In Glasgow

British naturalist David Attenborough gave leaders at the UN climate summit in Glasgow a brief lesson is the fragility of the planet and humanity's dependence on the natural world.

The 95-year-old documentary-maker, who was announced at Monday's ceremonial opening as the "people's advocate," spoke ahead of presidents and prime ministers from more than 100 countries.

Attenborough said for much of humanity's existence, the climate on Earth had swung wildly before stabilising 10,000 years ago, allowing human civilisations to flourish.

"The stability we all depend on is breaking," he told the summit.

Attenborough said the action necessary to curb greenhouse gas emissions to levels that would prevent dangerous global warming is possible, if countries move quickly and decisively.

"We are, after all, the greatest problem solvers to have ever existed on Earth," he said. "If working apart, we are a force powerful enough to destabilise our planet.

"Surely working together, we are powerful enough to save it."