The 19th Venice Architecture Biennale is dedicated to the theme of climate change: In light of rising temperatures and increasing extreme weather events, curator Carlo Ratti calls for a rethink. Architects are urged to draw inspiration from nature’s principles and make use of artificial intelligence as well as collective knowledge to create future-ready buildings. But do the exhibited projects and installations deliver on this vision? Our own Susanna Koeberle, John Hill and photographer Flavia Rossi traveled to the lagoon city for a critical report.