Why the former Ice Age became global warming, then climate change

Washington Examiner

Take recent history for example. In the 1970s, the hypothesis was that the globe was potentially headed for the next ice age.
I know this not only because of pronouncements from popular press at the time, but also because, as an undergraduate student at one of the top schools of meteorology, Penn State University, the buzz I heard was that the global climate was moving toward seriously colder conditions.
To substantiate this claim, professors referenced not only recent climate trends and observations but also the work of respected scientists, such as astrophysicist Milutin Milankovitch, who had investigated long-term climate cycles.  ......................
Today, it is fashionable to expect disaster from too much warmth. So the smart money is on promoting dire predictions and consequences of rising thermometers, even in the face of no global warming for more than 15 years.
From my own 35 years of experience in the atmospheric science profession as an air-pollution meteorologist, air quality program administrator and science educator, I can attest the fact that long-range, global climate-change outlooks are nothing but insular professional opinion.
Such opinion is not worthy of the investment of billions of dollars to avoid the supposed catastrophic consequences of abundant, inexpensive fossil fuels and, subsequently, to impoverish U.S. citizens with skyrocket energy costs."