A new statistical analysis of Airbnb listings shows the short-term-rental service is growing worldwide, but suggests that many hosts don't stick with it. Intermittent commercial uses of residences could be seen in the planning context of "mixed use."
Donald Trump invokes the darkest days of urban decay and crime to appeal to his base. The facts speak to an urban triumph that has led to greater national prosperity and higher standards of living for tens of millions of Americans.
During the nightly blackouts designed to protect London from aerial attack during World War II, authorities used white paint as a cheap tool for making the city navigable in the darkness. Could London offer lessons for building resilient cities?
A decade ago, a power failure in northern Ohio caused a cascading series of outages that knocked out power to 50 million people in the United States and Canada. New tools aim to reduce the chances that such events could happen in the future.