"Global Warming - Myth or Reality?" by Marcel Leroux offers a comprehensive analysis of the climate change debate from a climatological perspective. The book aims to separate facts from fiction and sheds light on the complex hypotheses regarding climate trends. The author begins with a historical overview of the activities of the Intergovernmental Panel on Climate Change (IPCC) since 1998 and discusses the main conclusions of the IPCC reports as well as their projected impacts on global temperatures, precipitation, and weather phenomena. Leroux criticizes the sensationalism in the media and examines the reality of the greenhouse effect, along with the limitations of climate models. He proposes alternative causes for climate change and analyzes trends related to global temperatures and sea levels. In conclusion, he provides recommendations for climate researchers to develop a better understanding of climate change processes and to integrate these into future climate models. This book is a critical engagement with the prevailing opinion and offers insights into the skeptical scientific community.