NYNext: With built-in tech to stop your snoring, this mattress promises the sleep of the future

In the city that never sleeps, one company is betting people will shell out thousands to spend their nights on the same kind of bed that Mark Zuckerberg, Elon Musk and the NBA’s Jimmy Butler use. While Eight Sleep is best known for making mattresses — crowdfunding its first project in 2014 with cash raised...