Marco Fleurbaey talks about the impact of climate change in our societies and in particular regarding to inequalities and health. Throughout his career, Fleurbaey has studied the increase in the average temperature of the earth in recent years, and according to him, climate change not only impacts the health of people, but also affects especially in a negative way those who are in more vulnerable situations. Fleurbeay talks about economics and ethics in order to understand the situation in which we find ourselves and find solutions to fight against climate change without creating more inequalities. An element that Fleurbaey highlights is the debate on population growth, especially in developing countries, which are more vulnerable to the consequences of climate change and global warming.