It was 1886. Ernst Haeckel, the Prussian biologist, philosopher and popularizer of Charles Darwin's work, coined the term ecology to refer to the science that studied the relationships of living beings with each other and with their environment. Following this line and in response to today's burning issues, Boris Cyrulnik elaborates a powerful new concept, psychoecology, to demonstrate how the environment can have a profound impact on the construction of the brain, the states of the soul, the human condition and the future of our societies. The famous French neurologist and psychiatrist uses a transversal approach (ethological, psychological and sociological) and offers an analysis of the consequences of excessive maternal stress, relational difficulties, educational adversity, social and environmental catastrophes, among others, on the body and the psyche. It also provides interesting data and reflections on the relationship between men and women, the transformation of the masculine and its future, violence (against women, in particular), education in childhood, the management of our emotions (especially anxiety), the impact of language and stories in our intimate life, and even the impact of climate and viral infections in our lives. A rigorous and thoughtful work, faithful to the informative style of the father of resilience.