This is an excellent video produced by the Allegheny Front radio program, which airs on WESA public radio, in Pittsburgh, Pennsylvania.
The Secret Life of Soot from The Allegheny Front on Vimeo.
Soot is bad to breathe in. But for decades, scientists have been trying to figure out why. It turns out, soot lives a ‘secret life’ once released into the atmosphere. What happens to these particles once they’re in the air? And how does it affect our health? Filmmaker Josh Kurz’s video for The Allegheny Front explains. More at www.alleghenyfront.org/soot.