The world has witnessed many noteworthy events since the dawn of human civilization. Some of them were for the better or the favour of mankind, while others were catastrophic. The current COVID-19 epidemic is an example. But this is not the first time that nature has shown mankind feet. There have been numerous occasions in history when nature was at its worst. In this book, we will discuss some of the years in the human history that not only badly impacted the lives of people of the time they were prevalent but also the lives of generations to come.