Sam's guest on this week's Book Club podcast is the writer Simon Winchester, whose new book takes on one of the biggest subjects on earth: earth. Land: How The Hunger For Ownership Made The Modern World starts from the author's own little corner of New England - what he proudly calculates at a bit more than three billionths of the earth's surface that he can call his own - and roams worldwide and through time and from the first prehistoric boundary lines to the modern age. Simon asks whether capitalism is possible without land rights, whether climate change will alter our relationship to property, why the pioneering map makers of the nineteenth century are now barely heard of - and just what the Dutch are up to.