Flagstaff mandates that shielding be placed on outdoor lighting so that it doesn’t project skyward. There are also limits on the lumens of light allowed per acre of land.The result is a starry sky visible even from the heart of the city. Flagstaff’s Buffalo Park, just a couple miles from downtown, measures about a 4 on the Bortle scale, which quantifies the level of light pollution. (The scale goes from 1, the darkest skies possible, to 9, similar to the light-polluted night sky of, say, New York City. To...
Chris Packham has reached a settlement with the government over two legal challenges against its decision to remove or delay some environmental policies.The TV...
Three Chinese astronauts, including the country's only woman spaceflight engineer, entered the Tiangong space station Wednesday morning following an early morning launch into orbit....
When a volcanic eruption buried the ancient city of Pompeii, the last desperate moments of its citizens were preserved in stone for centuries.Observers see...