Piero Angela, recognizing the urgent ecological emergency of our times, decided in the last period of his life to dedicate to the new generations, to the young people who today attend Italian schools and who one day will be responsible for the society of the future, a series of "lessons" to explain, as he himself says in the presentation: "in a simple and hopefully not boring way, the problems that humanity must face, linked to climate change and the search for new energy sources, but also the role of science and technology in modern society.