What can we learn from Germany's postwar transformation to help us address today's environmental and humanitarian crises? With the rise of populism, authoritarianism, and digital propaganda, how can history provide insights into the challenges of modern democracy? Frank Trentmann is a Professor of History at Birkbeck, University of London, and at the University of Helsinki. He is a prize-winning historian, having received awards such as the Whitfield Prize, Austrian Wissenschaftsbuch/Science Book Prize, Humboldt Prize for Research, and the 2023 Bochum Historians' Award. He has also been named a Moore Scholar at Caltech. He is the author of Empire of Things and Free Trade Nation. His latest book is Out of the Darkness: The Germans 1942 to 2022, which explores Germany's transformation after the Second World War.