Nigel Green's photographs of Dungeness 'B' Power Station, and some of the resilient plants in its vicinity, were the subject of an article in AJ 19.2.04. They are now on exhibition at Photofusion, 17a Electric Lane, Brixton, London SW9, until 13 November, along with photos of scientific environments in California by Naglaa Walker. Details www. photofusion. org (020 7738 5774).