You are standing on an expressway and are supposed to count the passing cars. Suddenly a small child runs onto the road. How do you react? You would probably try to save the child. Although that's not the job. "It's similar with the scientists who take part in peaceful, civil disobedience for climate protection," explains Nikolaus Froitzheim. The geology professor from the University of Bonn has been a climate activist since April 2022. Because he worries about the future of his children and grandchildren, as he tells Stern.

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