Sourcing "green" heat and energy in Iceland means tapping into the Earth's own heat source. This North Atlantic island is cold and frosted with glaciers, but it owes its existence to hot rock and geothermal principles

Energy from hot rocks powers lights in homes and restaurants, and provides the hot water that heats 95 percent of Iceland's homes. How about going outside in the middle of winter with almost no clothes on for laps in city swimming pools or backyard hot tubs, no problems for Iceland residents

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