Society was already in danger of collapsing during the corona pandemic.  How should and can it deal with the much more complex climate crisis?  Frank Hommel spoke to Dirk Messner, President of the Federal Environment Agency.  Freie Presse: Mr. Messner, in order to protect the climate, our way of life must change massively.  The reservations against it are enormous.  So what is more important for politics: Concrete...