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    • Vancouver greenlights LED streetlights

      The Columbian· 1 day ago

      Streetlights, that is. Let there be 13,500 of them — a project that will cost the city about $4 million upfront but cut its annual electricity bill in half. The city council gave the purchase ...

    • Light pollution hurts urban bats. Trees can help.

      National Geographic· 2 days ago

      Excessive artificial lighting, also called light pollution, can have a negative effect on many nocturnal animals, for instance by disorienting them or interfering with their ...