New research uses wildfire smoke as a natural experiment for testing nuclear winter theory, but uncertainties remain

An animation of GOES-16 weather satellite imagery reveals thick palls of smoke billowing up from wildfires in British Columbia on Aug. 11 and 12, 2017. The smoke rose into the stratosphere and ultimately circled the globe. Eight months later, some was still visible to satellites. (Source: RAMMB/CIRA)

Raging wildfires lofting huge amounts of smoke high into the atmosphere ha