A wave-eating boat is among inventions that will shape
Venice's future. This special edition examines technology hoped to save the city from floods. Plus, a look at a new laser scanner. With Peter Snow and Lindsey Fallow. Producer Rumu Sen-Gupta ; Editor Saul Nasse
Repeated next Wednesday with sign language (S) (W) CEEFAX: page 623; WEBSITE: www.bbc.co.uk/tw