California wildfires pass 4 million acres burned, doubling previous record – that's a lot of toxic smoke
- Written by Joshua S. Fu, John D. Tickle Professor of Engineering and Professor of Civil and Environmental Engineering, University of Tennessee
Wildfire smoke turned the San Francisco sky orange in the middle of the day in early September.Ray Chavez/Medianews Group/The Mercury News via Getty ImagesWhen you breathe in smoke from a wildfire, you’re probably inhaling more toxic chemicals than you realize.
Pollution from power plants and vehicles, pesticides, fertilizers and chemicals in...

