Dr. Rex J. Fleming received his B.S. degree from Creighton University with a major in mathematics. He later obtained a M.S. and Ph.D. from the U. of Michigan in the field of Atmospheric Science. He has over 50 years of experience in weather and climate research. His Ph.D. thesis involved the study of energy interactions within the atmosphere and a stochastic dynamic method of improving our understanding of those atmospheric interactions in light of uncertain initial conditions. The world is in chaos now due to the deliberate false theory that our climate is being warmed by the use of fossil fuel. Many countries are deeply concerned with energy issues -- will there be enough energy resources available to keep people warm through the coming winter periods? There have been many previous exaggerated claims that climate change warming was bad for mankind. The opposite is true --- warmer periods have been very beneficial for humankind. The latest claim from the United Nations (UN) is that the world will burn up with a 5-alarm fire unless the world stops using fossil fuel by a critical date is almost comical -- but one cannot laugh as this false theory has now reached a very serious point - there are no efficient alternatives to fossil fuels and a cold regime is coming! Not every year in a cold regime is severe, but in the coldest periods deaths may result if energy is not sufficiently available. Weather and the climate are chaotic! There is rarely a sharp line between the end of a warm period and the start of a cool period. There can be a discernable transition -- between the end of a warm period and the beginning of a cold period, hence the title of this book! A three-year transition was seen at the end of the Medieval Warming Period (900 AD - 1300 AD) and the beginning of the Little Ice Age (1303 -1850) during which millions died of starvation from famines. This current cold climate transition is described in this book. Will there be a 4th year of transition or the actual start of the Modern Cooling (2023 --?). While there is considerable information contained in this book, perhaps the single most relevant point is formulated in Chapter 10, page 90. Here we have the summary of the important physical evidence, the appropriate statistical data, and the effects of chaos rolled into a single statement about the next severe cold period likely occurring in 2030 +- 4 years.