This book is a critical appraisal of the status of the so-called Climate Sciences (CS). These are contributed by many other basic sciences like physics, geology, chemistry and as such employ theoretical and experimental methods. In the last few decades most of the CS have been identified with the global warming problem and numerical models have been used as the main tool for their investigations. The produced predictions can only be partially tested against experimental data and may represent one of the reasons CS are drifting away from the route of the scientific method. On the other hand the study of climate faces many other interesting and mostly unsolved problems (think about ice ages) whose solution could clarify how the climatic system works. As for the global warming, while its existence is largely proved, scientifically it can be solved only with a large experimental effort carried out for a few decades. Problems can arise when not proved hypotheses are adopted as thebasis for public policy without the recognition that they may be on shaky ground. The strong interactions of the Global Warming (GW) with the society create another huge problem of political nature for the CS.

Chapter 1. A summary of the problem.- Chapter 2. How Climate is studied.- Chapter 3. Modelling the Environment.- Chapter 4.- What It Is the Climate Science.- Chapter 5. Experimental data and climate.- Chapter 6.- The Bayes Statistics and the Climate.- Chapter 7. Statistics and Climate.- Chapter 8. Recent developments.-  Chapter 9. Some Conclusion.