Is the hydrogen tech `revolution` hope or hype?
(World News Science)

So at last, the long-awaited hydrogen revolution is here. Or is it? Back in the early 2000s, backers of hydrogen thought it would dominate the clean automobile market. But the promised “hydrogen highway” never materialised, for a couple of crucial reasons. Firstly, hydrogen power needed a new infrastructure, whereas rival battery cars could be charged off the near-ubiquitous electricity grid. Secondly, high-powered batteries at that time were already well-advanced for other uses such as computers, but hydrogen was not. So hydrogen lost the head-on battle for the motor car. But now it`s back in the frame for the sort of transport, industry and heating tasks that batteries are struggling to...