Also, this, Using Nature and Waste for Walls and Ceilings, about China’s sustainability efforts. A Finnish group has manufactured the shingles made of a composite blend of wood fibers and plastic for new pavilions in Shanghai for this event. The NYT says that themes of this event are recycling plastics using fiberglass to build houses! There are environmental themes considered in the building of many of the spaces for the Shanghai World Expo! ta da!