The long list for the Wainwright Prize — £5,000 for the best writing on the outdoors, nature and travel focused on Britain — was released today, World Environment Day. It runs to 13 books, which vary enormously in genre, subject, tone and length. Among them are Underland, Robert Macfarlane’s exploration of the world beneath our feet; Out of the Woods by Luke Turner, which is both an examination of bisexuality and a tribute to “Effing” Forest; Landfill by Tim Dee, which is about birds — gulls, specifically — and rubbish; and Timesong: Searching for Doggerland by Julia Blackburn, a hymn to a vanished landscape and the people who once inhabited it. The full list is on the Wainwright Prize site; the short list will be announced on July 2.