What has happened to Homo sapiens, the species that mastered fire, created art and dreamed of conquering the stars? Today, it seems that the same human being has transformed into Homo irrationalis: capable of designing prodigious technologies, yet also capable of destroying the planet that sustains us without restraint. In From Homo Sapiens to Homo Irrationalis, the author takes us on a journey through thousands of years of history, from the dawn of civilisation to the present day, to show how our decisions have triggered an environmental crisis of unprecedented proportions. More ferocious hurricanes, relentless droughts and devastating tornadoes are unmistakable signs that nature is taking its toll on us. Far from being pessimistic, this work is an urgent call to action. Through rigorous analysis and concrete proposals based on case studies, it charts a course to halt the deterioration and restore the values that once made us truly human. Are we willing to change course, or will we stand by and witness our own extinction?