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Light pollution competes with starlight in the night sky for urban residents, interferes with astronomical observatories, [16] and, like any other form of pollution, disrupts ecosystems and has adverse health effects. [17] [18] [19] Light pollution is a side-effect of industrial civilization. Its sources include building exterior and interior ...
Dark-sky movement. The dark-sky movement is a campaign to reduce light pollution. The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of electric lighting on the environment, improving the well-being, [ 1] health [ 2] and safety [ 3] of people and wildlife, [ 4] and cutting down ...
DarkSky's principal approach is to raise awareness about the value of dark, star-filled night skies and encourage their protection and restoration through education about the problems and solutions, including outdoor lighting practices that create less light pollution. In 2011, the organization had about 5,000 members in 70 countries.
Globe at Night is an international scientific research program that crowdsources measurements of light pollution in the night sky. At set time periods within each year, the project asks people to count the number of stars that they can see from their location and report it to the project's website. The coordinating researchers compile this ...
Bortle scale. The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky 's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution.
Composite image of worldwide light pollution at night. International Dark Sky Week (formerly the National Dark Sky Week) is held during the week of the new moon in April, [1] [2] when people worldwide may turn off their lights to observe the beauty of the night sky without light pollution. This event was founded in 2003 by high school student ...
July 10, 2024 at 2:05 PM. ST. PETERSBURG, Fla. - Saharan dust has made its way to Florida and officials in Pinellas and Hillsborough Counties are warning certain residents to take heed. The ...
Waste in Florida. Florida's 18 million residents (21 million as of 2020) and 80 million visitors generated over 32 short tons (29 t) million of solid waste in 1859. [ 25] Increasing landfill space has been an issue. In 1959 landfill space cost about $400,000 per 1 acre (0.40 ha).