http://news.ycombinator.com/item?id=377672 http://news.ycombinator.com/item?id=377672 There was also an article on HN about using osmotic pressure or something

http://news.ycombinator.com/item?id=377672 http://news.ycombinator.com/item?id=377672 There was also an article on HN about using osmotic pressure or something to generate electricity, basically an electron transport chain in reverse (I don't think I saved it...) I guess that's not as cool as Kelvin's thunderstorm, since it's basically just another chemical battery. EDIT: Ah, never mind, it was just powering a turbine: http://news.ycombinator.com/item?id=435149 http://news.ycombinator.com/item?id=435149