A poo bus
The UK’s first bus run on biogas has hit the streets of Bristol.
Wittily named ‘the number two’, the bus runs between Bath and Bristol Airport. The yearly output of 5 people is needed for each tank of gas.
Wondering what biogas is? If you haven’t already figured it out, it’s gas made from sewage sludge – or, if you prefer to be more direct, it’s gas made from human shit. Yes, this is a thing that really exists.
Professor of Geography Sarah Jewitt has a great piece on The Conversation about some of the other technologies that use human urine and feces. Urine contains nutrients which are beneficial for plants, and biogas and treated biosolids can also be used in agriculture.
More importantly, researchers have charged a mobile phone… using urine.