Rich, the recent research on fine particulates points to PM3 as being a real
problem. Is your filtration system up to that?

"Rich" wrote in message
...
Coby Beck wrote:
Not that I think this is going to happen. This all sprang out of the
twit-du-jour saying that CO2 levels have been as high as 6000ppm in
earth's history so why are we worrying. We may well be heading for
~1000ppm though...

I understand Coby. I also had a personal interest here living this close
to a really congested road. I was kinda interested if any figures existed
and if anyone had more pointers for me. It's that my houses' environmental
system already has filters for dust but there's not any consideration for
CO/CO2 or SO/SO2 ..

The past few days though have been kinda good .. having a truly bad Summer
with lower than avg temps has also its advantages!:
http://www.lml.rivm.nl/data/histo/445-168.html (text in Dutch though)

Richard