Matthew Sweet discusses the legacy of Sylvia Plath, who died 50 years ago this week, with her friend Ruth Fainlight and the poet Fiona Sampson. Tacita Dean and film maker Mike Figgis join Matthew in the studio to discuss the shift in film from traditional to digital technology and its implications. A review of The Bride and the Bachelors, a new exhibition of the work of Marcel Duchamp. And the science writer Marcus Chown and futurologist Anders Sandberg discuss the potential threats caused by two asteroids passing close to the Earth.