Wood is a pretty amazing material -- it's strong, malleable, and it literally grows on (or should I say, in) trees. Depending on the type of tree from which it comes from, wood can be both light and heavy, stiff and flexible, soft and hard.
The American Institute of Architects and its Committee on the Environment selected the top 10 examples of sustainable architecture and green design solutions that protect and enhance the environment. The COTE Top Ten Green Projects program, now in it