Waldorf Astoria New York, one of the city’s grandest hotels, closed for renovations in 2017. After almost eight years and billions of dollars, it returns, reborn for the 21st century.

Scientists were able to 3D-print different microstructures inside live cells, including a delightfully tiny micro-elephant.

The project meets many objectives, said QTS's Chris Kapper: "to deliver tax base, to provide jobs and create commercial ...