Water.

World's longest burning lightbulb (107 years).

The world's longest lightbulb, a low-watt firehouse bulb, has been burning continuously since 1901. Long after his retirement, ex-firefighter Tom Bramell still likes to visit Station No. 6 for old times' sake, whistling in amazement at all the changes. But one thing remains exactly the same. The sturdy little object hangs from the ceiling in the firehouse's engine bay, emitting its familiar faint orange glow. At 107 years and counting, the low-watt wonder with the curlicue carbon filament has been named the planet's longest continuously burning bulb by both Guinness World Records and Ripley's Believe It Or Not. The lightbulb even has its website:  http://www.centennialbulb.org/

Fascinating Light Sculpture

The directors of the National Malus Collection invited Heatherwick Studio to develop the design of this structure, called "The Sitooterie", for their site in Essex.