Then there's this ever-popular classic [0]: Genghis killed so many people that forests regrew, sequestering CO2 and cooling the Earth. [0]:https://www.livescien

Then there's this ever-popular classic [0]: Genghis killed so many people that forests regrew, sequestering CO2 and cooling the Earth. [0]:https://www.livescience.com/11739-wars-plagues-carbon-climate.html https://www.livescience.com/11739-wars-plagues-carbon-climat...