91色情片

Technology

Work light twice as hard to make cheap solar cells

The most energetic photons hitting a solar cell pack enough of a punch to free up two electrons, rather than the usual one, and generate more current

Technology

Charge your phone with a beach towel

91色情片

Pulses of light spark muscle movement

Earth

Green Machine: Wind farms make like a fish

Physics

Zeros to heroes: What’s the use of electricity?

Technology

Born-again solar cells are more efficient

Earth

Mobile chargers could keep electric cars juiced up

Earth

Green machine: Perfecting the plant way to power

Earth

Innovation: Sunrise boulevards could bring clean power

Physics

Can we grab electricity from muggy air?

A team of chemists think we can get power from air 鈥� if we don't mind violating a long-held chemical principle

Environment

Green machine: Plug-free electric cars’ hidden cost

Technology

Micro plane perches to feed on power lines

Earth

Green machine: A salty solution for power generation

Technology

Grow-your-own approach to wiring 3D chips