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What the equinox 'henge' effect tells us about U.S. cities

The fall equinox, which arrives Tuesday in the U.S., brings shorter days, and chances to witness alignment between Earth and the sun. It's a modern version of ancient observances of a celestial shift.

What the equinox 'henge' effect tells us about U.S. cities

We haven't written up this one. NPR has the full story — the link below goes straight to it.

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