My brother sent me this link. There are some really cool ideas here.
Compressed Earth Bricks, DIY tractor plans, sustainable farming, etc.
Open Source Ecology is a network of farmers, engineers, and supporters building the Global Village Construction Set -- a modular, DIY, low-cost, open source, high-performance platform that allows for the easy fabrication of the 50 different industrial machines that it takes to build a small, sustainable civilization with modern comforts.
http://www.ted.com/talks/marcin_jakubowski.html (http://www.ted.com/talks/marcin_jakubowski.html)
Also these links to their site:
http://opensourceecology.org/ (http://opensourceecology.org/)
http://opensourceecology.org/wiki (http://opensourceecology.org/wiki)