New York City races to secure unstable skyscraper after columns buckle and floors sag

Workers have started making emergency repairs to stabilise a Manhattan high-rise after buckled columns and sagging floors forced evacuations in and around the midtown construction site. The scene unfolded throughout Tuesday after the precarious conditions were spotted in the morning at the 1970s-era building, which is being converted into luxury flats. Construction workers at the site and people in nearby buildings – including a school, diplomatic offices and several hotels – in the busy...