"Wood plays a major role in combating climate change... Greater use of wood products will stimulate the expansion of Europe's forests and reduce greenhouse gas emissions by substituting for fossil fuel intensive products."
European Commission's DG Enterprise, 2003

Choosing wood reduces climate change through:
Substitution for other less environmentally friendly materials
Storage of the carbon from the tree throughout the life of the product (and beyond, through recycling)
Recovery of the stored energy at the end of the product’s life by burning as a substitute for fossil fuels
Regeneration of the forests, as timber use encourages replanting, which, in turn, sequesters more CO2 from the atmosphere.