This week: the first Kyiv Biennial since Russia’s invasion of Ukraine last year is taking place in various locations across the wartorn country as well as a host of neighbouring European states. We talk to the co-curator, Georg Schöllhammer, about this year’s event. As refugees and displaced people continue to dominate the news, a global sound art project, Migration Sounds, aims to explore and reimagine the sounds of human migration and settlement. Jem Perucchini, Rebirth of a Nation (detail), commissioned by Art on the Underground Courtesy of the artist; Corvi Mora, London. Jessica Vaughan, the senior curator of Art on the Underground, tells us about the commission.