MON Boreal forests could be a planet-warming ‘time bomb’ as wildfires expand, says new study https://edition.cnn.com/2023/03/02/world/boreal-forest-fires-study-climate-scn-intl Boreal forests could be a planet-warming 'time bomb' as wildfires expand, says new study | CNN CNN — The world’s most northerly forests could be a “time bomb” of planet-warming pollution as expanding wildfires have releas..