NaturalHomes.org is a great UK based resource that lists sustainable building courses and volunteer opportunities around the world.  In addition, it has an impressive feature that maps natural homes around the world with links to the owner's website.

NaturalHomes.org is a fantastic UK based site that lists sustainable building courses and volunteer opportunities and has a map of natural homes around the world with links to the owner's website.

 While you're there, check out NatualHomes.org's navigable google map showing the locations of green, natural homes around the world.

A website based in the San Francisco Bay Area dedicated to sustainability and green technology.

A blog based on the personal experiences of the author in building her house with many sustainable, green, energy efficient materials. Green Talk highlights past experiences with new green experiences as she continues to green her house, her garden, and the lives of others.

Appropedia is the wiki for collaborative solutions in sustainability, poverty reduction and international development.

A "Do Good For Profit" company. We sell energy efficient products. Our current product line consists of CFL's (energy efficient light bulbs) in a variety of styles to fit virtually any fixture and we sell solar hot water heaters. We donate 10% of our profits to environmental organizations.