A fascinating novel of love and ecology from the winner of the Nobel Prize for Literature.Doris Lessing returns to the world of visionary fiction, first visited in her Canopus in Argos quintet of novels in the 1980s, and in ‘Mara and Dann’, to which this is a sequel, in 1999.The Earth’s climate has changed – it is colder than ever before – and Dann, four in the first book, is now grown up and a ge...