The fact is, burning wood is good for the environment if burned cleanly and efficiently.
  The efficient use of wood fuel is much more eco-friendly than more efficient and convenient fuels like fuel oil and natural gas (LPG). LPG emits 15 times more CO2 per kg than wood, and fuel oil nearly 10 times as much.    CO2 is the main source of global warming and as long as wood burning is sustainable and doesn't cause deforestation, its CO2 emissions are neutral -- the CO2 released in the fire simply gets recycled back into more trees. Remember, this means a constant recycling of the forest. If we stop harvesting, the trees die or are burned in a forest fire and all the CO2 is lost back into the atmosphere. Which means the trees contribution to helping the environment was lost.