Islands of the Future

The sun-drenched Canary island of El Hierro produces most of its electricity from wind. In order to have electricity on calm days, the island came up with an ingenious solution: an inactive volcano crater is now a pumped-storage power plant.

Volcanic hydropower and geothermal energy meet nearly 100 percent of Iceland's electricity and heating demands, but the inhabitants aren't stopping there. Iceland intends to run all cars and its enormous fishing fleet on hydrogen.