Using timber that comes from sustainably managed forests can actually help address climate change by reducing the amount of greenhouse gases in the atmosphere. Trees absorb CO2 as they grow, thus significantly reducing the amount of CO2 in the atmosphere. The absorbed carbon is converted into wood in the tree. However if the forest was left totally alone, the trees in the forest will grow old and die. Trees can also die due to fire, wind damage and lightning strikes. When a tree dies, the wood will rot and release the stored carbon in the form of CO2. Therefore, it is better to harvest the bigger trees rather than let them die and rot, to keep the carbon imprisoned in the wood.