Source : New Scientist
https://www.newscientist.com/article/dn26933-rise-in-wildfires-may-resurrect-chernobyls-radiation.html#.VN4W7S5Rp2D Rise in wildfires may resurrect Chernobyl's radiation 11:35 09 February 2015 by Debora MacKenzie
Fallout from the world's worst nuclear accident just won't go away. Radioactive clouds may once again spread over Europe, as rising fires release radiation locked up in the upper layers of soil in the dense forests near (...)