We've got a couple of theories.
Bicyclists and public-bus commuters in San Diego are exposing themselves to a whole lot of crap in the air, according to new research.
San Diego joins a growing list of municipalities hustling to collect weapons from a record number of residents.
The unnamed cleaning contractor had built a secret napping nest inside an airport bathroom.
They are mostly found on the coasts, according to a new study.
The United States is not just as a single national economy but a collection of city and metro economies, and they're growing at starkly different rates.
More and more suburbs are cropping up as hubs.
Data are scarce, but a look at grants from the National Institutes of Health gives us at least a partial picture.
A landmark 2008 land use law has led to more sustainable communities.
One in seven young Americans are neither working nor going to school.
New York City and San Francisco are the most "requested" destinations on CouchSurfing.org.
It can if it's built right, as in Portland or San Diego, and new research explains why.
The worst culprits aren't necessarily the ones you'd expect.
How America's biggest metro areas stack up.
Wage growth varies considerably by metropolitan area, according to numbers from the most recent quarter.
Videos of the wild show.
Amid a contested mayoral race, deferred road maintenance costs end up front and center.
San Diego County has made it easy for its cities to convert to energy-efficient streetlights.
A sampling of some of the most vibrant, colorful signs.