Science series. First proposed by a German engineer at the turn of the century, the first wheel-based boat lift, the Falkirk Wheel, is about to make its initial turn. Quentin Coopertalks to Jim Steele about this massive feat of engineering, designed to reconnect the canals between Glasgow and Edinburgh, and asks what role computertechnology has played in its design and construction.
Producer Fiona Roberts. E-MAIL: material.world@bbc.co.uk