Hot off the EcoGeek press:
You gotta hand it to those people who are creating real-world solutions to real-world problems. Giant solar-collecting space lasers are pretty cool...but Sintex is for real. The Indian plastics company has created a very simple "digester" that takes something we have too much of (poop) and turns it into something we don't have enough of (energy).
The digester can actually take any organic material, including agricultural waste, kitchen scraps, or cow dung, and convert it to methane. This happens naturally, of course, and is happening in your septic tank (or at your sewage treatment plant) right now. The difference is that Sintex's biogas reactor has a little tube that moves the methane into a storage container. From there, the methane can be used for any natural gas application. Cooking, drying clothes, heating the home, boiling water, etc.
(Read the rest of the article at EcoGeek.com)