In this week's Forum we venture into the exciting yet somewhat unknown sector of renewable energy: hydrogen power.
Hydrogen is the most abundant element in the known universe, which makes it almost inexhaustible, unlike fossil fuels. When it is harnessed to produce electricity and power, it offers a completely clean energy source.
A group of students at Cambridge University has been hard at work building a solar-powered racing car. The Cambridge University Eco Racing (CUER) team includes 75 students who design, build and race solar-powered cars.