Wood does not make any depts with the nature. Through the carbon dioxide attechment in basement and plants throughout millions of years, the atmosphere initally got to this habitat for the present life-forms. Via the fossil combustible burning (crude oil, domestic gas or carbon) the carbon dioxide gets released within short time, which results in the well-known greenhose effect. Heating with wood does NOT augment the CO2 concentration in the atmosphere. Ecologically engaged. MIO only gets stoked with wood or wood briquette. Naturally rotten wood produces the same amount of carbon dioxide like the accurate combustion of wood. The renewable CO2 neutral combustible wood not only gives us independence from the big oil-, electricityand gas-multis but also preserves our environment.