Simon Carter, Rise and Shine: Sunlight, Technology and Health, Oxford and New York, Berg, 2007, Pp. Ix, 134, £55.00, $99.95 (Hardback 978-1-84520-130-2), £19.99, $34.95 (Paperback 978-1-84520-131-9).Richard Hobday, the Light Revolution: Health, Architecture and the Sun, Forres, Findhorn Press, 2006, Pp. 172, £7.99 (Paperback 978-1-84409-087-7).