Persephone is a tour guide in Greece, but perhaps not the type people are used to. Billed as the world’s first robot tour guide inside a cave, Persephone has been welcoming visitors since mid-July to ...
This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. ALISTRATI, Greece (AP) — Persephone is a ...
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