Since we are commenting on an article that, whatever its other virtues and vices, is extremely well-researched, you might want to take a few minutes to look up

Since we are commenting on an article that, whatever its other virtues and vices, is extremely well-researched, you might want to take a few minutes to look up the "fact" that you're claiming in your second sentence. The tl;dr is that "The Cooling Earth" was always a minority view among climate scientists; it was actually a competing theory to the anthropogenic global warming theory, as they both started in the 1970s; that one of the theories (global warming) persisted while the other (global cooling) faded quickly can be plausibly explained by both theories offering testable and mutually exclusive predictions, one set of which turned out to roughly match the data and the other of which didn't match it at all. That we are talking about global warming now and stopped talking about global cooling is not a sign of a "scam to scare people," it is a sign of science working the way it is supposed to.