IdentityHow tree justice could change US citiesTrees protect health and lower bills: planting them in tree-poor communities of colour has the greatest impact.FutureThe powerful paintings reframing black experienceA new exhibition of black figurative art gets to the truth behind race, history and the world we live in now.CultureWhat Couple to Throuple gets wrong about polyamoryThe show is among the first to represent polyamory to a mass audience. Relationship experts say the showrunners could have done better.CultureToni Morrison on her mission to please black fansOne of the great 20th-Century novelists, Morrison consciously aimed her work at black American readers. In a 2003 interview, she told the BBC about why that made her writing sing.CultureWhy divas deserve to be difficultThe trope of the demanding, drama-loving diva is everywhere – stage, screen and music. But a new exhibition celebrates the diva for what she really is, writes Deborah Nicholls-Lee.CultureAdoptees hope to break taboo of identity struggleA podcast featuring Welsh adoptees aims to tackle myths about adoption.WalesDo you need to be from London to be a cockney?Cockney status used to be defined by geography. Can people who aren't even Londoners now claim it?LondonWhy are Air Jordans so valuable?As the Ben Affleck movie Air premieres, with Matt Damon and Viola Davis, the original sneakers are being auctioned. Ellie Violet Bramley explores the rise of the ultimate cult shoe.CultureConversion therapy ban hard to police, says victimJohn Sam Jones was subjected to electric shock aversion therapy in the 1970s to stop him being gay.Wales