LIFE : Save the world

Here is an excellent organisation which tries to save the world using Appropriate Technology - one of my favorite subjects. They may be christian, or at least use good fearing souls for funding, but the work they are doing seems to be excellent.
Having spent the past few weeks around England looking at museums about our forebares, it is amazing to think that a lot of our 'of course' stuff just hadn't even occured to anyone yet. Decent plough design, ram pipes for moving water and many more things could make peoples lives so much easier without severely impacting the environment.