Iceland is about to take its first steps into a carbon-free, atmosphere-friendly future. In a few decades, rather than burning fossil fuels to power its public and private transport, all cars, buses and lorries will run on hydrogen. So will the boats of its fishing fleet. And as the country is blessed with plenty of geothermal energy, its power stations do not need to oil or gas. Reporter Richard Black goes to Iceland to investigate the technology needed to achieve the new hydrogen economy.
Producer Andrew Luck-Baker EMAIL: radioscience@bbc.co.uk