As in every year for more than half a century, the map department of the Staatsbibliothek zu Berlin in cooperation with the Staats-, Landes- und Universitätsbibliothek Dresden and the Dumont publishing house has been publishing a yearly calendar on a special cartographic theme. For 2023, the calendar is dedicated to the topic of environment and climate. It shows 12 sheets of climate maps, landscapes that appear untouched compared to today, but also maps of sometimes dramatic events that have changed our environment.