May 2, 2007 Dupont's innovative ETFE polymer is 1% the weight of glass. It stretches to three times its normal length without losing its elasticity, has controllable shading and noise insulation properties, and never gets dirty due to the non-stick properties it shares with its cousin Teflon. Laid out in sheets or blown up in pillows, it's being used in a number of fascinating major architectural developments, including the stadium and aquatic centre being built for Beijing's 2008 Olympics. It's developing a reputation as a "miracle polymer" for public architecture.

More information from our friends at Businessweek Online, including some stunning examples of how ETFE is being used around the world.