An article by Mindy Farabee for The Daily Beast.

Our bright lights and big cities are causing us to get less sleep and waste a lot of energy.

Not so terribly long ago, people everywhere experienced nights so black that even the Milky Way could cast shadows on the earth. According to some estimates, around 80 percent of people now live under night skies so polluted by artificial light that they’ve never seen the Milky Way at all.

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