SCIENCE - Physicists propose a device to capture energy from Earth's infrared emissions to outer space

(Phys.org) —When the sun sets on a remote desert outpost and solar panels shut down, what energy source will provide power through the night? A battery, perhaps, or an old diesel generator? Perhaps something strange and new ...

http://phys.org/news/2014-03-physicists-device-capture-energy-earth.ht