When traffic lights break down in the ways discussed above, there is a risk that the global economy can get snarled up or even crash.

ECONOMIST: World economy

Fundamental advances in LED semiconductor technology, optics, and lighting system design now enable LED lights to break century old cost and performance barriers that have prevented consumers from realizing the savings businesses and municipalities already enjoy.

FORBES: LEDs: Lighting The Way To Major Energy Savings

When the Na'vi tread through it, the ground lights up beneath their feet (I kept waiting for someone to break into a chorus of "Billie Jean").

CNN: Review: 'Avatar' delivers on the hype

For example, if the glass break sensor on the kitchen window is tripped, the system can be set to turn on the lights in the room and start recording a video.

ENGADGET