By Gareth Willmer As cities across Europe sweltered under a heatwave in June 2026, professor Michael Janoschka was focused on a longer term problem: how to make homes affordable and energy-efficient in a continent facing a housing crisis. Janoschka has spent much of his career studying how rising house prices, property speculation and urban inequality are reshaping European cities. Today, as professor of regional science at Karlsruhe Institute o…