SINCE October sightseers on the hills above Edinburgh have gawped at a brand new landmark. Across the Firth of Forth, on a test site, stands the biggest wind turbine in Britain. The tips of its blades rise 196m above sea level. Its rotor sweeps an area twice as large as the London Eye. This monster and others like it are bound for the North Sea—part of the biggest and most ambitious offshore wind programme in the world.