This document discusses how cities are becoming "smarter" due to new technologies and increased connectivity. It notes that the 21st century will be the century of cities, with 70% of people living in cities by 2050. Key topics covered include sustainability, urban planning, architecture, infrastructure, ubiquitous computing/Internet of Things, community-powered solutions, government-enabled solutions, drawing parallels between the Internet and how cities can operate, and examples of smart cities like New Songdo being built from scratch. The document suggests that in 5 years, smart cities will be able to predict diseases, self-repair infrastructure, and substantially lower emissions through increased connectivity between cities.