On Fri, 11 Jan 2008 15:26:16 -0000, "Phil Cook"
<phi### [at] nospamrocainfreeservecouk> wrote:

>
>I think the fact it doesn't 'do anything' from our limited perception on  
>matters makes it seem rarer, a bit like the fact that nitrogen forms a  
>greater percentage of air then oxygen sometimes comes as a shock to people.

Isn't there a rare gas that seeps into the basements of houses in Cornwell and
similar areas that is toxic?

Regards
	Stephen

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