San Diego's streetlights get smart

None of the people walking around San Diego's East Village neighborhood one recent afternoon were looking up at the streetlights (except me). And if they had, they likely wouldn't have noticed that some of these lights were a little thicker around the middle than others, or that some lanterns topping old-style lampposts had a clear glass panel here and there. But unbeknownst to the people below, those streetlights were looking- and listening-all around them, while also monitoring temperature, humidity, and other characteristics of the air.