Giant bags full of biogas provide 4 hours of cooking fuel

The pack is part of a project by German start-up <a href="http://www.be-nrg.com/" target="_blank">(B)energy</a>, which helps people create small businesses making and selling methane gas.

To create the methane, users collect dung and other <a href="http://inhabitat.com/index.php?s=organic" target="_blank">organic</a> waste which is placed into a semi-portable digester, the (B)plant.

A boy walks down the middle of a busy street in a small country town in <a href="http://inhabitat.com/index.php?s=ethiopia" target="_blank">Ethiopia</a>, carrying an enormous backpack. He doesn't fold under its weight because this special backpack is filled with biogas.