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We have entered a new geological era, the Anthropocene. Its characteristic is the impact of humanity on the global environment. What are the physical limits that we must not exceed if we want to avoid the collapse of ecosystems and the climate? How can we become aware of the epochal challenge we face? There are solutions, from renewable energy to waste reduction, but every day we lose makes the road more difficult and the risks higher. We must act, for the quality of our life and that of our children and grandchildren. He is president of the Italian Meteorological Society; he founded and has directed the international meteorology magazine Nimbus since 1993. He has conducted over 1600 conferences, in Italy and abroad, and has participated in more than 1000 radio and television interventions, mainly on Rai 3. He is responsible for the Meteorological Observatory of the Real Collegio Carlo Alberto in Moncalieri. He has conducted over 1600 conferences, in Italy and abroad, and has participated in more than 1000 radio and television interventions, from 2003 to 2014 he was part of the fixed cast of the RAI3 program "Che tempo che fa" by Fabio Fazio. In 2015-16, again for RAI3, he created and conducted two editions of the environmental dissemination program "ScalaMercalli"; This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx