HEATKEYS

Build It Solar will help people with Do It Yourself skills build solar projects that save money and reduce pollution. It is a "hands-on" site with detailed plans for solar projects including solar space heating, water heating, passive sola...

Free Lecture Notes, Syllabus, Tutorials, Audio and Video from MIT professors. All Free. No registration. | MIT OpenCourseWare | ocw.mit.edu

PNGinc, consulting, licensing, product development, engineering training, solar engine appliances, solar steam, turbine engines, Phoenix linear solar grid array, ORC turbogenerators, Phoenix Navigation & Guidance

Environmental directory for green products, online eco shopping, green services and sustainable resources. Organic food, ...

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

Discussion and education on renewable energy and self sufficiency topics

RC Groups - the most active Radio Control model community: electric and fuel rc airplanes,rc helis,rc boats and rc cars. Features discussion forums, blogs, videos and classifieds.

GrabCAD - a free CAD model library with 2D / 3D CAD files available for software like SolidWorks, AutoCAD, Autodesk Inventor, Solid Edge, SketchUp etc.