On Sat, 25 Dec 2004 21:41:29 -0600, Jim Adney
wrote:

You might want to read several articals in Physics Today in the last
few years. I'm only familiar with those because that's one I get, but
I'm sure that there are other scientific journals that have detailed
the chemistry that is responsible for these reactions. The process has
been well known in the scientific community for more than 20 years.

It remains a political question mark simply because it is inconvenient
to some parts of the political spectrum, mostly the same people that
have trouble with evolution, the heliocentric solar system, and the
concept of a round earth.

Ozone concentrations over both poles has been tracked for many years.
Naturally there is a normal variation from year to year, but the
current trend is way outside the norm.

Ozone concentrations over the north pole have also been tracked for
the same amount of time, but until recently there was never a "hole"
there. Now we have an annual hole. This is a distinct change.

It's a distinct change *over the period of time we've been measuring.*
We havn't been measuring even an eyeblink of time yet, so all we know
is that it's a change in extremely recent history.
We have absolutely no idea of how much the ozone layers have changed
over even the last century, much less long enough to make some sort of
rational claim of an abnormal change over a long period if time.
Maybe when we have been measuring the ozone layers for even as short a
time as 50 years, we might find a cycle that's simply repeating.
But to make such a claim with such an extremely short data gathering
period is simply bad science.

--
Bill Funk
Change "g" to "a"