Kosa ja muka muuttavat maailmaa: kestävän kehityksen jäljillä (2021)

The book starts with the main character Kosa’s profound question «Who am I?» and ends with global reflections about how the world could be a better place for us all now and in the future. Kosa is a curious child who, accompanied by Cousin Muka, goes on an adventure to explore the circuit of water. During their adventures around the city, the children encounter interesting characters and end up thinking about the universe, people, knowledge, society, and sustainability. The book encourages the reader to ponder how to do good for the world.