David Hansen wrote:

On Thu, 18 Oct 2007 17:19:57 +0100 someone who may be Peter Parry
wrote this:-

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.

There are no poisonous metals in nuclear electricity generation?

None that anyone ever need be exposed to.

Graham