New York City is the largest central business district in the world. Silicon Alley, centered in Manhattan, has evolved into a metonym for the sphere encompassing the New York City metropolitan region's high technology industries involving the Internet, new media, telecommunications, digital media, software development, biotechnology, game design, financial technology (""FinTech""), and other fields within information technology that are supported by its entrepreneurship ecosystem and venture capital investments. In 2015, Silicon Alley generated over US$7.3 billion in venture capital investment across a broad spectrum of high technology enterprises, most based in Manhattan, with others in Brooklyn, Queens, and elsewhere in the region. High
The Concentration City The Concentration City "The Concentration City" is a dystopian short story by British author J. G. Ballard, first published, under the title "Build-Up", in "New Worlds" volume 19 number 55 in January 1957. It was reprinted in the collections "Billennium" and "Chronopolis" and later, under its revised title, in "The Disaster Area" and "". "The Concentration City" is set in a "city" encompassing everything in known existence to its inhabitants. The districts comprise endless streets and buildings and seemingly infinitely high and low levels, or floors, with few trees and little wildlife. Cubic space is in shortage and expensive. High