This is a book that has a main goal to disclose information in an easy way about the ecologic crisis and climate change, phenomenon that are the great threat of the XXIst century. They both affect the whole planet and could change life as we know it, risking future and present generations. This essay encourages to think about the vulnerability of a world that is still getting over a pandemic, and a world that is facing big international geopolitical challenges. It is also an informative book that intends to raise awareness to the reader, pointing out the importance of protecting and preserving the environment, so we can assure the natural balance of our common home, planet Earth.