A book about life in an Indian slum and the story of George Mallory's attempt to climb Everest are among the contenders for a prestigious literary prize.
The shortlist of six books in contention for this year's Samuel Johnson Prize for Non-Fiction also includes a history of violence and a biography of playwright August Strindberg, but there is no room for Salman Rushdie's memoir Joseph Anton, which made the initial longlist.
MP David Willetts, who chairs the judging panel, said: "The titles on this year's shortlist have all impressed the judges with their originality and high quality of writing. Each of them communicates complex themes, and in a way that is both enlightening and entertaining.
"These are significant books which have the ability to change our view of the world and which we believe will make a lasting contribution to their genres. Their broad range of subject matter reflects the diversity of English-language non-fiction, and has the potential to inspire readers of all interests."
The winner of the prize, which will be announced on 12 November, receives £20,000.
Previous winners include Anthony Beevor's history of Stalingrad and Barbara Demick's Nothing To Envy: Real Lives In North Korea.
Behind The Beautiful Forevers: Life, Death And Hope In A Mumbai Slum, by Katherine Boo
Into The Silence: The Great War, Mallory And The Conquest of Everest, by Wade Davis
The Old Ways: A Journey On Foot, by Robert Macfarlane
The Better Angels Of Our Nature: A History Of Violence and Humanity, by Steven Pinker
The Spanish Holocaust: Inquisition And Extermination In Twentieth-Century Spain, by Paul Preston
Strindberg: A Life, by Sue Prideaux