--- On Wed, 12/10/08, Michelle Smith Mullarkey <[log in to unmask]> wrote:
 Fossil fuel is still used to manufacture and transport the majority of green building products (not natural building products such as straw bales)...
 
I'm afraid that fossil fuels are used for the production of most straw and since some of it is coming from Canada, there's also transportation costs. "Natural" building materials are not necessarily immune from the environmental costs of other materials.