Attenborough Warns of Collapse of Civilizations and Extinctions

“Right now we are facing a man-made disaster of global scale, our greatest threat in thousands of years: Climate change. If we don’t take action the collapse of our civilizations and the extinction of much of the natural world is on the horizon.”

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