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One-third of the world cannot see the Milky Way — why that matters
(CNN) -- If you look up at the evening sky, there's a good chance you will not be able to see what your grandmother saw when she was a little girl. That's because we're enshrouded in an artificial haze of light that is blocking the night sky, a phenomenon scientists call light pollution. Scientists believe one-third of humanity cannot view the Milky Way --- this includes 80% of Americans and 60% of Europeans because city lights are creating fogs of light pollution, according to a new study that published Friday in the journal of Science Advances.