[URBAN NOTE] Five city links: New York City, Los Angeles, Paris, Venice, Istanbul

• The OS/2 operating system is used in New York City to run that metropolis subway system. VICE reports.
• The problem of homelessness in Los Angeles, the Guardian reports, is shocking.
• CityLab reports on plans for new sorts of urban forests outside famous landmarks in Paris.
• DW reports on how people in Venice protest against the intrusions of huge cruise ships into their lagoon, threatening the delicate environment.
• Guardian Cities reports on how the hipster class in Istanbul has begun to migrate to the countryside, driven out of their city by real estate prices and by politics.