A trend towards drier, hotter summers in the forests around the abandoned nuclear power plant at Chernobyl has increased the riks of forest fires in the region — which is a big deal, considering the fact that trees and plants in the area have absorbed some of the radioactive isotopes from the 1986 disaster. If they burn, more people will be exposed to airborne particles. It’s a small fraction compared with the people exposed by the original Chernobyl power plant fire, but still dangerous.