Polyurethane fabrics can be manufactured in different thicknesses, depending on their intended use. For example, fabric used in diapers may be thinner than fabrics used for camping gear. Polyurethane fabrics are manufactured to feature a variety of characteristics. In situations where fuel contact is likely, the fabric can be made fire-retardant.
Oldest Wooden Building in the World. World's Oldest Wooden Building, is a five-story pagoda, part of HÅryÅ«-ji (Meaning: Temple of the Flourishing Law) Buddhist temple complex in Ikaruga, Nara Prefecture, Japan. The temple complex was completed in 607 AD.
The oldest house in the world is this 15,000 year old one made of mammoth bones found at Mezhirich near Kiev in Ukraine. It was probably covered with mammoth hides. It is planned to include this house in the Treasures of Ukraine Exhibit scheduled for the Royal Ontario Museum in Toronto in 1996.