They used computer modeling to design a pair of buildings, one of which works like a gigantic, curved mirror. The glass surface of the northernmost building reflects light down into the shadow cast by its southern partner. And the carefully defined curve of that glass allows the reflected light to follow the shadow throughout the day. — wired.com

Last night, nearly 500 New Yorkers gathered at the New York Public Library’s main branch for a forum on the wave of skyscrapers that are rising along the Southern edge of Central Park. Skyscrapers that will, depending on whom you ask, either transform Central Park into a gloomy airshaft or create shadows as fleeting and insubstantial as a cloud moving across the sun. Concerns were raised, grievances aired and oligarchs denigrated. — observer.com