Biogas and How to Make a DIY Anaerobic Digester (Video) - " Biogas and anaerobic digestion made number one in HowStuffWorks' list of wacky alternative energy, and poop-to-energy biogas projects have proven popular on Discovery News too.
The Vietnam Household Biogas Project is installing biogas systems across Vietnam which use waste from household cattle and pigs to create electricity for the home. This one-of-a-kind project is spreading renewable energy to households across Vietnam.
The HomeBiogas system converts organic waste like food scraps, kitchen trash and pet manure into usable energy for your home. The end result is biogas and fertilizer. The only concern I have is the sludge.
Make a Biogas Generator to Produce Your Own Natural Gas - Renewable Energy