Fig. 2From: Smoke in the Great Plains, USA: an increasing phenomenon with potential policy and health implicationsSide-by-side comparison of differences in opacity of smoke between (A) grass-dominated fuels, and (B) woody-dominated fuels. Fires in Stillwater, Oklahoma, USA, on (A) 27 September 2016, and (B) 12 February 2015. Photographs by H. StarnsBack to article page