Booker Prize-winning author Ian McEwan sits down with Olivia Salazar-Winspear to discuss the 22nd century society he created in "What We Can Know", as his latest novel is translated into French. While his characters grapple with the aftermath of the great "derangement", in a world where many of the 21st century's capital cities have been submerged, we discuss our upcoming reckoning with the climate crisis.