Humans have harnessed the sun's energy for heat and light in various ways for centuries. From housing designs featuring thermal mass heated by the sun, to solar powered ovens and greenhouses, the ...

The sun’s energy can be increased when focused on a smaller area—just ask any kid who has burned holes in a sheet of paper with a magnifying glass. The same concept has been used for small camping ...

The secretary of the Department of Energy made this statement on Sept. 2 concerning a solar-energy incident: “Even if you wrapped the entire planet in a solar panel, you would only be producing 20% of ...