For the moment, the process generates only enough electricity to recharge smartphones or lithium ion phosphate batteries that allow for continuous lighting. We envisage a future with advanced materials, highly energy efficient actuators, and storage devices where urine and other organic waste matter could be used as the fuel for charging the batteries of a vehicle. Fill 'er up How much pee powers an EV? This is the equivalent to Wh, which is at least two orders of magnitude lower — both in terms of power and voltage — than what the Tesla lithium ion battery would require. The technology is so promising that it has garnered the support of the Bill and Melinda Gates Foundation, and is currently being deployed through Oxfam to bring pee power to refugees in the developing world. By David K Gibson 12 July
Annalee. Age: 24.
A team of researchers based at the University of the West of England in Bristol has developed a method for turning human effluent into electricity.
Lilith. Age: 29.
For the moment, the process generates only enough electricity to recharge smartphones or lithium ion phosphate batteries that allow for continuous lighting. To field test the process, the team installed a special urinal on their campus, and later another at the Glastonbury music festival. The Glastonbury effort collected from a thousand donors a day in a male urinal, which allowed for single-stream recycling. How much tinkle to charge a Tesla? And if you liked this story, sign up for the weekly bbc.