CINCINNATI (AP) -- Kathy Choi touches a kiosk screen, then looks up at a larger wall screen to see digitally created yellowish-brown mounds snaking through bright green grassland dotted with brilliant blue rivers and lakes. The ancient earthworks in the Ohio River Valley now are grass- and tree-covered mounds and walls diminished by development, floods and agriculture. But she's seeing them as they might have looked 2,000 years ago, by way of a computerized fly-over. "It makes it all seem m...
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