Planet Power ~ Scientists May Harvest Energy from Earth’s Infrared Emissions

Heated by the sun, our planet is very warm compared to the frigid depths of space. Thanks to recent technological advances such as plasmonics and nanofabrication, and new materials like graphene, the researchers say this heat imbalance could soon be transformed into direct current (DC) power, taking advantage of an untapped, virtually limitless energy source.
Source: ScienceDaily.com