https://www.americanthinker.com/blog/2019/07/the_primal_scream_of_climate_change_fanatics.html
In 1968, Stanford University professor Paul Ehrlich wrote The Population Bomb, which became a bestseller. The premise of the book was that worldwide famine was going to destroy humanity. According to the professor, this frightening scenario was scheduled to happen in the 1970s and 1980s, due to overpopulation, as well as other major societal upheavals. Hmmm…sounds as though he was giving mankind about 12 years before Armageddon would occur. Whom does that remind you of? Anyway, his solution was immediate action to limit population growth! We know how well that worked out!
During the 1970s, we entered a period of academic conjecture on a subject that came to be known as global cooling. This theory was based on studies that suggested that a buildup of glaciers was occurring and could cause imminent cooling of the Earth’s surface, leading to another Ice Age. Glaciers are made up of fallen snow that, over many years, compresses into large, thickened ice masses. Presently, glaciers occupy about 10 percent of the world’s total land area, with most located in polar regions like Antarctica, Greenland, and the Canadian Arctic. Glaciers are remnants from the last Ice Age, when ice covered nearly 32 percent of the land and 30 percent of the oceans. At 10 percent, we’re doing well.
As we moved into the 1980s, another climate scare was taking root. Acid rain gave new meaning to the term “the sky is falling.” According to the alarmists of that era, there was a form of precipitation that contained an acidic quality with elevated levels of hydrogen ions. They claimed that the acid rain was having harmful effects on plants, aquatic animals, and our infrastructure. Nothing much was said about walking in the rain or drinking rainwater. After a series of studies and the emergence of a new term called the “ozone hole,” life went on pretty much the same as always.