the 2010 world expo is planned to be the largest world expo in history since it began in 1851. the theme of the expo is "better city, better life" and opensin shanghai, china may 1st & is scheduled to run until october 31, 2010.the uk pavillion has been designed by heatherwick studio and explores the relationship between nature and city. as london happens to be the greenest city of its size in the world, what better way to advertise the uk with the "seed cathedral".the seed cathedral is 20 meters tall and is formed from 60,000 slender transparent fiber optic rods that encloses one or more seeds at its tip. during the day, they draw daylight inwards to illuminate the interior. at night, light sources inside each rod allow the entire structure to glow. when the wind blows the optic "hairs" gently move as they create a dynamic effect.