In this picture taken Oct. 15 2012, Grigoris Athanassakis chips bark off logs at his firewood yard in the Athens district of Tavros. A steep increase in heating costs has forced many in crisis-hit Greece to switch from heating oil to wood-burning for warmth. But there's a catch. Illegal loggers are slashing through forests devastated by years of summer wildfires, air pollution from wood smoke is choking the country's main cities and there has been an increase in blazes caused by carelessly attended woodstoves.(AP Photo/Petros Giannakouris)

Associated Press
In this picture taken Oct. 15 2012, Grigoris Athanassakis chips bark off logs at his firewood yard in the Athens district of Tavros. A steep increase in heating costs has forced many in crisis-hit Greece to switch from heating oil to wood-burning for warmth. But there's a catch. Illegal loggers are slashing through forests devastated by years of summer wildfires, air pollution from wood smoke is choking the country's main cities and there has been an increase in blazes caused by carelessly attended woodstoves.(AP Photo/Petros Giannakouris)
In this picture taken Oct. 15 2012, Grigoris Athanassakis chips bark off logs at his firewood yard in the Athens district of Tavros. A steep increase in heating costs has forced many in crisis-hit Greece to switch from heating oil to wood-burning for warmth. But there's a catch. Illegal loggers are slashing through forests devastated by years of summer wildfires, air pollution from wood smoke is choking the country's main cities and there has been an increase in blazes caused by carelessly attended woodstoves.(AP Photo/Petros Giannakouris)