Rafal Kowalczyk, Director of Mammal Research Institute of Polish Academy of Sciences shows dead spruces tree after they were attacked by woodwarms in primaval parts of Bialowieza Forest on May 31, 2016 near Bialowieza. Today, this peaceful haven is the scene of a bitter battle between environmentalists and officials over a spruce bark beetle infestation that rangers say is damaging healthy trees. / AFP PHOTO / WOJTEK RADWANSKI