So far, most of the world's response to the challenge of climate change has been just talk. But in Iceland, the public and private sectors are beginning a quest to make their country the first to be powered by an oil-free and coal-free energy system. Scientists, politicians, and business leaders have conspired to put into motion a grand experiment that may end the country's—and the world's—reliance on fossil fuels forever. The island has committed to becoming the world's first hydrogen economy over the next 30 years.