Batteries are nearing their limits in terms of how much power they can store for a given weight. That's a serious obstacle for energy innovation and the search for new ways to power airplanes, trains, ...

Zero-emissions air travel may be one step closer after scientists at the Massachusetts Institute of Technology unveiled a new type of sodium fuel cell that could one day make electric-powered flight ...

Scientists have developed a fuel cell system which they say could ultimately have enough energy capacity to power regional electric aircraft. They state that the technology is capable of carrying over ...