Zoltan Berki Sr, 55, searches for firewood in an old abandoned house in Ozd, Hungary, December 19, 2020. To Zoltan Berki Sr. pollution means chest pain and coughs, but cold is a more imminent danger. "We collect what we find and take it home to burn," Berki said. "They heat up nicely, and we can't afford to buy anything." REUTERS/Marton Monus SEARCH "MONUS POLLUTION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY.