Tokyo Will Retrofit Its Skyscrapers To Prep For the Next Big Quake

Mass dampers—the gigantic weights designed to counteract swaying in skyscrapers—are usually installed during the construction process. But today, a Japanese real estate company announced plans to install six of the devices atop a 39-year-old building in downtown Tokyo. If all goes well, they could pop up on tall… » 7/31/13 5:53pm 7/31/13 5:53pm