I saw the movie Logan Lucky yesterday: an
entertaining yarn that lost me in places. I mean it was hard for me to understand
some of what was happening, but that may be more of a statement about me than
of the movie.
One of the pre-movie trailers was of the Al
Gore sequel. He’s still urging us to stop the inevitable. Maybe he’s got an
upcoming presidential campaign?
Here’s my problem with his thesis. Almost 80%
of the earth’s atmosphere is nitrogen and about 20% is oxygen. Greenhouse gases
comprise about 1% of our atmosphere, and most of that is water vapor. CO2 is only a very small percent
of this. In fact, carbon dioxide is about 400 parts per million. How much of that carbon dioxide is produced
by processes under man’s control? About
5%. So, if you have a million units of atmosphere, the stuff Al Gore wants us
to stop producing accounts for 20 of those million units. Let’s suppose we
doubled our emissions. Now CO2 would be 420 parts per million. And
if we stopped altogether, then what? 380
parts per million. Somehow it doesn’t look like what we are doing matters a
whole lot. Climate is changing with or without us. We do not control solar
activity, and this seems to be mainly what drives climate change.