The broadcaster told a United Nations-sponsored climate conference in Poland that climate change is the greatest threat in thousands of years.
Attenborough sends strong message to leaders as Poland climate summit kicks off
British naturalist and TV personality David Attenborough speaks in the opening ceremony of the COP24 summit in Katowice, Poland Source: AAP
Sir David Attenborough says the extinction of much of the natural world is on the horizon unless urgent action is taken.
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