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Sources Experts & SpokespersonsInternational Dark-Sky AssociationConcerned with stopping the adverse environmental impact of light pollution and space debris.
Our Mission
IDA works to protect the night skies for present and future generations.
Our Goals
* Advocate for the protection... Sources Select ResourcesFor 90 years, lightbulbs were designed to burn out. Now that's coming to LED bulbsDoctorow, Cory Article 2016 Boingboing.net In 1924, representatives of the world's leading lightbulb manufacturers formed Phoebus, a cartel that fixed the average life of an incandescent bulb at 1,000 hours, ensuring that people would have to ... Sources BookshelfThe City in HistoryIts Origins, Its Transformations, and Its Prospects Mumford, Lewis Book 1961 Beginning with an interpretation of the origin and nature of the city, Mumford follows the city's development from Egypt and Mesopotamia through Greece, Rome, and the Middle Ages to the modern world.
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