A Japanese company is planning to build the world's tallest wooden skyscraper with 90 percent of the building made of wood. Sumitomo Forestry says its wooden high-rise — dubbed the W350 — will be 350 meters tall and the planned structure will be a hybrid of mostly wood and steel. The 70-storey building, expected to be built in Tokyo, will comprise of stores, offices, hotels and private homes, the company noted in plans released earlier in February. Sumitomo Forestry, which notes on its website that "happiness grows from trees," said it aimed to create environmentally-friendly, timber-utilizing cities which "become forests...