The hidden cost of light pollution

07/22/2013 | National Geographic News

The natural state of darkness has been nearly obliterated because of artificial light, writes author Paul Bogard. The near-impossibility of viewing the night sky in all its glory brings health concerns but also a diminished sense of our place in the universe and a decreased incentive to care for the planet, Bogard argues. "Artificial light at night is a miracle, a wonder, a quality that enriches our lives. But the same has always been true of darkness," he writes.

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