Cars, and transport in general, account for more than 20% of global emissions of carbon dioxide – and that proportion is growing rapidly. Cleaning up the internal combustion engine – or replacing it altogether – is now an urgent priority to combat climate change. So this Earth Report looks into the cars of the future and asks why aren’t they widely available today? They look normal, but under the bonnet there’s a remarkable technology – the fuel cell. It makes electricity from hydrogen and the only by-product is water. While all the world’s big car manufacturers are working on hydrogen-powered cars, how quickly they can be introduced is still a matter of contentious debate between environmentalists, governments and the car industry.
Films in this series