Solid-state white LEDs are now being increasingly used in torches.
With no vulnerable filament and 100,000 hours of life they are
virtually indestructible.

It's likely we'll see more of them, hopefully in our homes when the
price falls sufficiently and the colour temperature is "warm."

Here's one of the inventors responsible for this ecological advance:
http://news.bbc.co.uk/2/hi/technology/5328446.stm

Peter Bright
Tasmania