File name: douglasfire_usda_620.jpg Original Resolution: 620 × 413 File Size: 83 KB (MIME Type: image/jpeg) Date Published: October 3, 2021 Download file View image caption Lightning-sparked fires, such as the Douglas County Complex Fire in Washington State in 2015, can release carbon dioxide, but human activity produces much more of the greenhouse gas. Photo CC license by USDA.
