IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. As knowledge of materials and ...

FLAGSTAFF — Since the passage in the 1980s of Flagstaff's comprehensive lighting ordinance, the golden hues of low-pressure sodium lights have come to prevail in Flagstaff skies. They are a response ...

The stars at night don't appear as big and bright as they used to, thanks to cities washing out the sky with excessive, misdirected light, astronomers say. The glow troubles astronomers trying to pick ...

Question: There were several break-ins in my neighborhood. I want to install outdoor security lights, but they are so expensive to operate. Are there any bright lights that don't use a lot of ...

There was a time when street lighting means someone had to go light the lamps. Electricity changed that, but street and outdoor lighting has been quietly going through a new revolution: LEDs. The ...