Today, most alternative energy technologies that are discussed--wind, solar, tides, waves, clean coal, nuclear fission and, perhaps one day, fusion--are useful only for making electricity.

FORBES: Magazine Article

LEDs be laid down, but also tiny solar panels and antennae that convert radio waves into electrical energy.

ECONOMIST: Microelectronics

From his boat, Ridley wrote a daily blog via a solar-powered satellite phone, describing his near collision with a container ship, battles with 20-foot waves and cravings for gin and tonics.

FORBES: Philanthropy