TOKYO (Reuters) - Enter the Neo. Part motorcycle and part toilet, it runs on eco-friendly biogas produced from sewage -- and recently completed a journey of more than 1,000 km (600 miles) across Japan ...

As we head out the door on our road trip to the 2014 Mother Earth News Fair in Topeka, Kansas, I wanted to give an idea of how much energy can be generated at home using biogas while using the example ...