Norman Foster: Building on the green agenda

www.ted.com Architect Norman Foster discusses his own work to show how computers can help architects design buildings that are green, beautiful and "basically pollution-free." He shares projects from throughout his career, from the pioneering roof-gardened Willis Building (1975) to the London Gherkin (2004). He also comments on two upcoming megaprojects: a pipe to bring water from the Red Sea to the Dead Sea, and the new Beijing airport.