![](https://www.nationalgeographic.com/content/dam/environment/2019/09/history-amazon-fire/history-amazon-fire.jpg)
Ancient farmers burned the Amazon, but today's fires are very different
5:07pm PDT - September 6th, 2019 ed - National GeographicParts of the Amazon are more prone to fire today because farmers thousands of years ago regularly set the undercarriage alight.