December 19, 2014, 5am PST
One of the first things researchers noticed when nighttime images from the Suomi NPP satellite were beamed back to Earth: the planet's ambient lighting changes drastically during certain holidays, like Christmas and Ramadan.
June 5, 2014, 7am PDT
As part of an initiative called Choose Chicago, meant to boost the city's draw for tourists, Mayor Rahm Emanuel is pursuing a plan to light the city up
February 21, 2014, 8am PST
Portland is a city that's often better known by the representations of it—like the television show Portlandia—than as an actual working city.