43 13`52 n 91 03`07 e Paste these co-ordinates into Google Earth and you are taken to a remote region of N W China. Zoom in and you'll see a pattern like a chain-link fence, across miles of the grey desert. Zoom in really close around here and you'll see off arrays of 6 x 7 dots, repeated at regular intervals. Anyone got the faintest idea what this is? Dr Hillary Shaw School of Business, Management and Marketing Harper Adams University College Newport Shropshire TF10 8NB