stacked firewood of a wood pile

acrolein agencies air airshed allergies aromatic breathing burn burning carbon carcinogens chemicals children consumers contamination cut dioxins diseases dried elderly emissions energy filters fire fired firewood footprint forest fossil fuel fuelwood furans furnaces future gas government greenhouse harmful health heat hydrocarbons indoor ireplaces known logs lung managed neighbours net nongovernmental nuisance oven particle pile pollution polycyclic quality reduces reliance self smoke split stack stove supply sustainability those toxic trees warm well winter wood woodlot