Hydrogen gas has long been recognized as an alternative to fossil fuels and a potentially valuable tool for tackling climate change.
In the most optimistic outlooks, hydrogen could soon power trucks, planes and ships.
It could heat homes, balance electricity grids and help heavy industry to make everything from steel to cement.
Hydrogen is the lightest and most abundant element in the universe.
Harmful substances, like carbon dioxide had been causing air pollution and green house gases when fossil fuels used for electricity generation. In fuel cell technology, electricity can be created when oxygen and hydrogen react. During this process, only water are emitted. This could aid climate goals and contribute to cleaner air for the environments.