The $6.2m banana, Frank Auerbach remembered, Lindokuhle Sobekwa’s photographs of addiction in South Africa—podcast

Exploring this week’s New York auctions, which included Maurizio Cattelan’s now-infamous fruit, plus a tribute to the late German-British artist Auerbach and a chat with Sobekwa about a work from his powerful series, on view at the UK’s Sainsbury Centre