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> The only major exception to this would be places like Yosemiite Part
> where the huge valley holds the smoke most days until the wind
> picks up...and there are not too many places like YNP that hold
> the smoke that insidiously.
You might be surprised. I suspect most would consider Montana an
unlikely place to find air pollution, but my hometown of Missoula was at
one time one of the smoggiest in the nation during the winter, due to a
combination of industry, auto exhaust and wood smoke. Restricting the
use of fireplaces and wood stoves during inversions has gone a long way
towards eliminating what was once regular Stage I air alerts.
Again, the problem is due to the city's location in a mountain valley,
but that's not nearly as uncommon as you might think.
It is our attitude toward free thought and free expression that will
determine our fate. There must be no limit on the range of temperate
discussion, no limits on thought. No subject must be taboo. No censor
must preside at our assemblies.
William O. Douglas