01-20-2007, 12:30 PM
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#104 (permalink)
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| Guest | Re: OT Interesting video
In article <45b1c627$0$80118$742ec2ed@news.sonic.net>,
jobst.brandt@stanfordalumni.org wrote:
> Matt O'Toole writes:
>
> >> You can't pinpoint current air quality problems from a single
> >> source or even a single nation. There are lots of contributors.
> >> Cars. Trucks. Coal fired powerplants. Industry.
>
> > Actually the sources can be pinpointed pretty well. Certainly there
> > are lots of sources, but the lion's share of air pollution is from
> > motor vehicles.
>
> I can recall when trains were pulled by steam engines that often
> belched huge plumes of thick black smoke. However, we had not yet
> experienced smog, although media mentioned it with respect to Los
> Angeles.
Los Angeles basin is smog central. The inhabitants
before the Spanish noted that cooking fire smoke
ascended ~1000 ft then spread horizontally.
--
Michael Press
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