Sir David Attenborough saw Australia's Great Barrier Reef and said, "it was like a cemetery because all the corals had died. They died because of a rise in temperature and acidity.” Attenborough, who turns 100 today, told Anderson Cooper in 2020 that people need the natural world. “We depend upon the natural world for every mouthful of food that we eat and indeed every lung full of air that we breathe. I mean, if it wasn't for the natural world the atmosphere would be depleted from oxygen tomorrow. If there were no trees around, we would suffocate,” he said. "I think people are discovering that they need the natural world for their very sanity." #coralreef #greatbarrierreef #nature #climatechange