born in Lübeck in 1969, is a German politician and writer. He studied philosophy and philology in Freiburg i. Br. and Hamburg and completed his doctorate in philosophy in 2000. He has been working as a writer together with his wife Andrea Paluch since 1999. From 2012 to 2018, he was the deputy minister-president of Schleswig-Holstein. Since the beginning of 2018, he has served as the national chairman of the Bündnis 90/Die Grünen party together with Annalena Baerbock.