TOKYO (AP) - Japanese planners this week revealed the design of a huge broadcast tower that is set to become the world's tallest structure upon completion in 2011, eclipsing even Canada's CN Tower. The tower will stand 613.5 metres tall, according to Tobu Railway Co., which has provided land for the project. Once finished, it will claim the title from the CN Tower in Toronto, 553-metre-tall communications structure and outlook point which is currently the world's tallest freestanding structure. Dubbed the "New Tokyo Tower," the building will replace a 332-metre tower built in 1958. The new tower, designed by award-winning...