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.
The Arctic may become ice free as soon as 2015, 85 years earlier than recent predictions, prompting a briefing of top U.S. government officials, including those from the Pentagon and the Department of Homeland Security, by Arctic specialists.