Apparently someone has created a fuel cell that can generate electricity from human excrement (http://news.bbc.co.uk/1/hi/uk/3499006.stm).
This gives me a horrible vision of how people might go about "recharging" their mobile phones or laptops in the distant future...
This gives me a horrible vision of how people might go about "recharging" their mobile phones or laptops in the distant future...