The emerging science of tracing smoke back to wildfires.
New York Times
https://www.nytimes.com/2023/06/28/us/the-emerging-science-of-tracing-smoke-back-to-wildfires.html
New York Times
https://www.nytimes.com/2023/06/28/us/the-emerging-science-of-tracing-smoke-back-to-wildfires.html