Starting April 1, many of the skyscrapers and other buildings in Philadelphia will be going dark at night. Though the move will cut down on energy use, the main goal of the effort is to help protect migrating birds.
Starting April 1, many of the skyscrapers and other buildings in Philadelphia will be going dark at night. Though the move will cut down on energy use, the main goal of the effort is to help protect migrating birds.
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