When it comes to Easter Island's towering stone heads, there's now one fewer mystery to solve.
Researchers have long puzzled over why the huge statues were placed where they are. However, a new study says the people of Rapa Nui, as the island is called in the local language, positioned them near sources of humanity's most vital resource: fresh water.
Archaeologists studied the location of the statues, or moai, and the platforms on which many of them stand, known as ahu. Polynesian seafarers...
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