Solar power can reduce reliance on polluting, non-renewable fuels.

The first known use of humans using wind to perform mechanical work with machines dates back to ninth-century Persian windmills. But if we count sailing vessels among those machines, the history goes ...

Time from space. The light-powered Astron GPS Solar, which Seiko launched 14 years ago — this article is indeed a brief history of the Seiko Astron Solar GPS, not the groundbreaking Astron from 1969 — ...