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Costa Rica
Monday, May 23, 2022
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Mysteries

The blue waters of Costa Rica’s Río Celeste: Mystery solved

The turquoise tones of Río Celeste (Spanish for "Blue River") – one of Costa Rica’s most prominent natural jewels – "is mostly an optical phenomenon, not a chemical effect in the water," a research team formed by experts from the University of Costa Rica (UCR) and the National University (UNA) reported this week.

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