Well, I'll tackle the environmental carbon question, and then I'll pass it over to Marta.
Wood, by its nature, being a natural product, consumes carbon to be creative, whereas when producing concrete, steel, plastic, or any other manufactured material, those processes pump carbon into the atmosphere. As I said, the simple equation is that for every cubic metre of concrete used in construction where you could have used wood, you're putting an additional tonne of carbon into the atmosphere.
If you look at the quantities of steel and concrete that go into non-residential, low-rise construction in North America, it is potentially a very significant contributor to the entire climate change debate. Carbon sequestration is going to be included, as I understand it, in the second phase of the Kyoto Protocol, whereas you can gain credit for building with wood and using that process to remove carbon from the atmosphere, versus other building products.