I've been to some remote places: the southwestern tip of Costa Rica, the Andes of Peru. Seeing a dark sky, filled with stars and other celestial bodies is awe-inspiring, to say the least. David Owen has written a good article in the New Yorker about the problem of light pollution - the how outdoor artificial light is making it harder to find a dark place to see the beauty of the night sky. The article also mentions some interesting issues with the prevalence of bright outdoor lighting for 'security' purposes:

"Marcus Felson, a professor at the School of Criminal Justice at Rutgers University, has concluded that lighting is effective in preventing crime mainly if it enables people to notice criminal activity as it’s taking place, and if it doesn’t help criminals to see what they’re doing. Bright, unshielded floodlights—one of the most common types of outdoor security lighting in the country—often fail on both counts, as do all-night lights installed on isolated structures or on parts of buildings that can’t be observed by passersby (such as back doors). A burglar who is forced to use a flashlight, or whose movement triggers a security light controlled by an infrared motion sensor, is much more likely to be spotted than one whose presence is masked by the blinding glare of a poorly placed [flood light]."

Kudos the the International Dark-Sky Association for trying to keep our night skies visible and helping us to use less energy in the process. Another interesting proposal comes from the group Civil Twilight, who won a Metropolis Magazine Next Generation Award for their design concept: streetlights that respond to ambient moonlight, dimming and brightening each month as the moon cycles through its phases.

Posted by Chris at 09:12 PM in Environment, Planning, Science | Comments (0)