On Thu, 18 Oct 2007 16:08:19 +0100, David Hansen
wrote:

On Thu, 18 Oct 2007 15:26:09 +0100 someone who may be Peter Parry
wrote this:-

You mean like the mercury in CFL's? :-)

How does this compare with the mercury emitted producing the extra
electricity needed to power incandescent bulbs?

Quite badly if compared with sensible generation methods such as
nuclear.

--
Peter Parry.
http://www.wpp.ltd.uk/