Headline: "Harvesting 'limitless' hydrogen from self-powered cells" Content excerpt: "However, the team added, the current cost of operating the new technology

Headline: "Harvesting 'limitless' hydrogen from self-powered cells" Content excerpt: "However, the team added, the current cost of operating the new technology is too high to be used commercially." If the cells are self-powered, and the energy that can be extracted is limitless, this implies an operational surplus that could be harnessed and sold. Any technology that were truly "limitless" and "self-powered" is, by definition, commercially viable. I don't really have a point other than the fact that I feel compelled to flag this just on the principle that the content completely and totally fails to follow the headline. Terrible editorializing. I expect more from the BBC. It's difficult to tell from the confusing manner in which the article is written, but it sounds like the bacteria produce free electrons while they are "breaking down organic matter". Not much talk about that though. The author quickly moves on to completely different device that sounds like reverse electrolysis. Add fresh water and salt water, separate them with a special membrane, and you get electricity. Neither of these technologies are limitless or self-powered. They require either "organic matter" or a supply of fresh and salt water.