Where There’s Fire, There’s Smoke and it’s Bad for your Health
Posted by Robert Westover, Office of Communication, USDA Forest Service in Forestry
Aug 23, 2018
https://www.usda.gov/media/blog/2018/08/23/where-theres-fire-theres-smoke-and-its-bad-your-health
(山火事もUSDAの管轄なんだ)