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.
Confidence votes 461. The Hohle Fels bird bone flute is the oldest instrument in the world. A dozen pieces of griffon vulture bone were found dispersed in Hohle Fels cave in southern Germany in June of 2009. When assembled the instrument spans 8.6 in length with 5 holes.