One of my favourite books last year came from the butterfly mind of the Swedish entomologist Fredrik Sjöberg, author of that unlikely bestseller The Fly Trap. In The Art of Flight, published as the United States marked the centenary of the founding of its National Parks Service, Sjöberg told how two of his fellow Swedes had had a hand in that great project designed to ensure that “virgin reserves should be placed here and there throughout the country, like Sundays in a landscape of weekdays”.

This week, The Art of Flight comes out in paperback from Penguin (£9.99). Courtesy of the author and his publisher, you can read an extract on Deskbound Traveller.