Richard Mabey discusses his biography of Flora Thompson, author of Lark Rise to Candleford, and choreographer Richard Alston joins Anne McElvoy on the eve of Radio 3's Ravel Day. Plus there’s a discussion about the ongoing fascination with ruins; whether a picturesque castle ruin glimpsed through the mist or the eerie photographs of an abandoned Detroit. Anne talks to the curator of a new exhibition at Tate Britain and the writer, Amanda Hopkinson.