<p>Rivers were the arteries of our first civilizations - the Tigris and Euphrates of Mesopotamia, India''s Ganges, Egypt''s Nile, the Yellow River of China - and have nourished modern cities from London to New York, so it is natural that poets have for centuries drawn essential meanings and metaphors from their endless currents.<br><br> English poets from Shakespeare and Dryden, Wordsworth and Byron to Ted Hughes, John Betjeman and Alice Oswald; Irish poets - Eavan Boland, Seamus Heaney, Paul Muldoon, to name but a few; Scottish and Welsh poets from Henry Vaughan and Robert Louis Stevenson to Robin Robertson and Gillian Clarke. A whole raft of American poets from Whitman, Emerson and Emily Dickinson to Langston Hughes, Mary Oliver, Natasha Trethewey and Grace Paley. Folk songs. African-American spirituals. Poems from ancient Egypt and Rome. From medieval China and Japan. And a truly international selection of modern poets from Europe (France, Italy, Russia, Serbia), India, Africa, Aust