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Tina Brown was an Englishwoman barely out of her twenties when she arrived in New York. She transformed herself into a star magazine editor, at the helm of Vanity Fair and later the New Yorker. She tells Amol Rajan how the backstabbing and status-driven world of American politics allows figures like Donald Trump to triumph.Didier Eribon is one of France's leading philosophers and the biographer of Foucault. But he has only just "come out" as working class. In his memoir Returning to Reims he asks why social status is still toxic in Europe today. And he gives a damning account of how the French working class shifted their loyalty from the Communist Party to Marine Le Pen's National Front.Frida Kahlo is a communist icon. As one of the world's most marketable faces she has even appeared on Theresa May's bracelet. Kahlo had a keen sense of her own image from an early age, and painted endless self-portraits. But she was also ashamed of her body and the accident that had left her unable to bear a child. As a blockbuster exhibition opens at the Victoria and Albert Museum, author Miranda France unpicks Kahlo's slippery reputation.A governess arrives at a grand country house and is terrified by the sexual freedom she encounters, in Benjamin Britten's opera The Turn of the Screw. Timothy Sheader directs a new production for Regent's Park Theatre and the English National Opera. He explains how a ghost story about a boy seduced by a powerful working man enabled Britten to address the shame and criminality of homosexuality in 1950s Britain.Producer: Hannah Sander.

One-third of the earth's surface is classified as desert. The writer William Atkins has travelled to eight of the world's hottest, driest places. He tells Andrew Marr about these forbidding, inhuman landscapes. The Arabian Desert lies mostly in Saudi Arabia but crosses borders from Egypt to Qatar, UAE to Oman. The economic analyst Jane Kinninmont looks at how this shared landscape affects regional politics and culture.In the 1950s deserts were the preferred places for Britain and America to test their nuclear bombs in secret. The science journalist Fred Pearce explores the human ingenuity - and human error - that has fuelled the atomic age. Producer: Katy Hickman.

Psychedelic drugs are once again being trialled to treat a range of psychological conditions. The writer Mike Pollan tells Kirsty Wark about the science of LSD and magic mushrooms: from the 1940s to the 1960s they promised to shed light not only on the deep mysteries of consciousness, but also to offer relief from addiction and mental illness. Banned since the 1970s, there is now a resurgence of research into these mind-altering substances.While some psychiatrists were getting their patients to experiment with psychedelics in the 1950s, far more were administering electroconvulsive therapy - both have a controversial history. ECT involves sending an electric current through the brain to trigger an epileptic seizure. It gained a reputation as a barbaric treatment, after the film One Flew Over The Cuckoo's Nest. But the psychiatrist Dr Tammy Burmeister believes that it's time people understood the therapeutic potential from this procedure.The poet Andrew Motion's latest book Essex Clay is an attempt to return to heartfelt memories of childhood. He looks back at his mother's riding accident, which left her 'floating herself among the nebulae and gas clouds of her vast unconsciousness' and her subsequent slow death. The book revolves around loss and memory and retrieval. The evolution of the human brain is one of the wonders of nature, but the philosopher of science Peter Godfrey-Smith asks what if intelligent life on Earth evolved not once, but twice? He wonders how the octopus - a solitary creature - became so smart. He traces the story from single-celled organism 3.8 billion years ago to the development of cephalopod consciousness, casting new light on the octopus mind. Producer: Katy Hickman.