Adriana Tapia

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MARY LOUISE KELLY, HOST:

Beneath the pine and birch forest of northern Germany lies Unicorn Cave, named for the bones found by medieval treasure hunters.

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ARI SHAPIRO, HOST:

Simone Biles, already the most decorated gymnast in history, has surpassed expectations again. On Saturday, she performed a move considered so dangerous that no other woman has ever attempted it in competition.