A novel device that uses only sunlight and wastewater to produce hydrogen gas could provide a sustainable energy source while improving the efficiency of wastewater treatment.
Southern California drivers who are on the transportation cutting edge - tooling around in hydrogen fuel cell-powered vehicles - will soon have a new option for filling up.
Oh dear, oh dear. A week or two ago, I found myself on a city street listening to a very cross man on a soap-box explaining that evolutionary theory couldn't possibly be correct, as he remembered his grandfather and his grandfather wasn't a monkey.
A new pedal-powered sewage disposal system could help fight diseases such as dysentery, cholera and typhoid, its inventor hopes.