Scientists have been trying for years to develop an efficient way of obtaining renewable energy, but somehow they do not seem to succeed. Maybe they just look bad because we have an endless source of such energy at hand, which in addition can be very cheap.

It is infrared radiation, which is millions of gigawatts of thermal energy that our planet radiates into space. This energy comes from the core of the Earth, from animals, humans, and many other sources, and if they were able to convert some of them into electricity, we would have an infinite source of power, plus pollution-free.

Up until now, the use of this energy has remained in the sphere of dreams, but a group of physicists at Harvard University has developed an invention that can change that. Utilizing nanotechnology, graphene, and electronics, they have engineered a device that can process infrared waves into electricity.

The principle of its operation is similar to the standard photovoltaic panel. The panel generates infrared rays from which the current is then produced. The device consists of two tiles: one located at the ground, absorbs infrared energy from the ground, and the other is much cooler, emits infrared. Thanks to the temperature difference between the two plates, energy can be produced.