Bloomberg Y Combinator, the startup accelerator and investment firm that helped produce Airbnb, Dropbox, and Instacart, is embarking on a creation project arguably more ambitious than any company. “We want to build cities,” wrote Y Combinator partner Adora Cheung and President Sam Altman in an announcement slated for release Monday. YC Research, Y Combinator’s nonprofit arm, plans to solicit …

  Singapore / Bloomberg Within weeks of India easing aviation rules, Singapore Airlines Ltd.’s local venture is charting a course to take on carriers from the Middle East. It’s counting on a surge in international traffic from the world’s fastest growing major air-travel market. Vistara, in which the city-state’s flag carrier owns 49 percent, is considering buying or leasing wide …

  Tokyo / Bloomberg Line Corp., Japan’s most popular mobile-messaging service, and its owners are aiming to raise as much as $1.1 billion in what could become the biggest technology initial public offering globally this year. Backed by South Korean search portal Naver Corp., Line and its existing investors are offering 35 million shares at 2,700 yen to 3,200 yen …