David Attenborough Warns Of ‘Collapse Of Civilizations’ At U.N. Climate Meeting

David Attenborough, the naturalist and broadcaster, sounded a dire warning in a speech Monday to the U.N. climate conference in Poland.

“Right now we are facing a man-made disaster of global scale, our greatest threat in thousands of years: Climate change,” Attenborough said as the international climate conference got underway with talks on how countries will implement the 2015 Paris Agreement limiting carbon emissions.

“If we don’t take action, the collapse of our civilizations and the extinction of much of the natural world is on the horizon.”