The whole world is talking about energy. Because without energy, we would have no light, no hot water and no heating. Our cars, school buses and aeroplanes also need energy in the form of petrol and fuel.

Unfortunately, the materials from which we obtain our energy - such as crude oil and coal - are only available in limited quantities. That's why we increasingly want to use the sun and wind as a source of energy.

But how can we store this energy so that we can also use it when the sun is not shining and the wind is not blowing? That's a pretty tricky business, and one that hydrogen can help us with - a mysterious gas that can be used to power rockets and cars. But how does it work? Where does this gas come from? And how does it help us store energy? We will answer these questions with many experiments in the lecture.