I have in my hand the November 1976 issue of National Geographic Vol 150 No. 5.
It's a good thing that the rest of the world doesn't use 35 year old information to influence it's thinking. Let's see, sophisticated weather satellites, computers, advances in geological science, obvious scientific measurements should have no effect on one's opinion of what is happening to the earth seems to be what you are saying.
(I save it for dealing with loons)
I'll save your post here for the same reason.
That said, it is easy for me to agree with those who say that global warming exists. It is NOT easy for me to agree with the fact that man is necessarily the primary (Or even secondary) cause.
It is also easy for me to agree that Al Gore is an idiot, global warming notwithstanding.