The LBM Journal has a certified green dealers program that allows lumber businesses to become certified green dealers.  According to the LBM's Certified Green Dealer Website, The Certified Green Dealer™ Program is a national, Web-based “distance learning” program that allows lumber and building material dealers and distributors to learn about green building techniques and products.

If you're in the lumber business you should check it out both as a means to stay on top of sustainable building trends, but also as a way to brand and differentiate yourself from your competition.