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'Greatest Threat to Humanity in Thousands of Years: Climate Change'
A major UN climate conference has been warned that the window of opportunity to save humanity from global warming is closing fast.
The people's delegate at the UN conference, British naturalist Sir David Attenborough, says the collapse of civilisation and extinction of much of the natural world is on the horizon unless we take action.
Also in the programme: Stem Cell research possible cure for osteoarthritis and is veganism is a 'philosophical belief'.
(Photo: Sir David Attenborough. Credit: Getty Images)
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Mon 3 Dec 2018
14:06GMT
成人快手 World Service except Australasia
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