Burning one hectare of grassland gives off more, and more damaging, pollutants than 6,000 cars. And we are burning in Africa, every single year, more than one billion hectares.

Source: "How to Fight Desertification and Reverse Climate Change." TED2013. Feb. 2013. Conference Presentation. Additional Information: This quote presents an unsavory fact: Every year, we burn a tremendous amount of grassland in Africa, producing more pollution than 6 trillion automobiles. The quote is from a TED Talk by Allan Savory about how two-thirds of the world's grasslands are turning into desert, and how this is accelerating climate change at an alarming rate and causing social chaos in the grazing societies that depend on those grasslands. Watch the full TED Talk here: Allan Savory - How to Fight Desertification and Reverse Climate Change