The World Exposition in Osaka opened Sunday, with organizers hoping the six-month event focused on designing a sustainable future will boost the domestic economy despite delayed preparations.The expo will continue until Oct. 13 on Yumeshima, an artificial island in Osaka Bay, with 158 countries and regions participating. Some 28.2 million people are projected to visit.Its major exhibits are encircled by the Grand Ring, which has a circumference of 2 kilometers and is recognized by Guinness World Records as the world's largest wooden architectural structure.At the Japan Pavilion, main exhibi…READ FULL ARTICLE