Forests play a critical role in filtering and renewing our air. Trees absorb carbon dioxide (CO2) and water (H2O), and release oxygen (O2). The carbon absorbed is stored until the trees die and decay or are burned in a wildfire, at which point the carbon is released back into the atmosphere. Some of the carbon absorbed by trees is stored for a long period of time within the forest. Less known is the fact that trees use carbon (C) to produce wood, and that products made from wood continue to store carbon for as long as they exist. In fact, one-half the weight of wood is carbon.