Most Blue Skies is a computer generated project that attempts to identify “the most blue skies” in the world. The first stage of the project was exhibited at The Gwangju Biennale in South Korea in 2006. In the exhibition, a cluster of computers used live satellite data with advanced atmospheric simulations to continuously calculate sky colour for five million places around the world, while displaying ongoing calculations and a global map of sky colours. The name of the location of the current bluest sky was projected beneath a square wall illuminated by a specially developed lighting system reproducing the colour of the bluest sky in real time. Fed by live global atmospheric data, the installation calculated the passage of light through particulate matter in the atmosphere and calculated sky colours for millions of places on earth. By comparing millions of these calculations, the project identified the intensity and location of the “most blue skies” in the world.