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Light pollution doesn’t just obscure the heavens—it could seriously damage our health

By Michael Tabb

If you can’t see the stars in the night sky, you’re far from alone.

More than one-third of the world cannot see the Milky Way, according to new research measuring light pollution around the globe. Some 99% of Americans and Europeans have light-obstructed views.

That does more than block us from contemplating our place in the universe. Watch the video above to see the extent of the problem—and the wide-reaching consequences it can have.