Ancient Mayan societies built sophisticated water filters using materials used in modern purification systems

Researchers find remains of one of the world’s oldest effective water filtration methods, writes Harry Cockburn

Source: https://www.independent.co.uk/independentpremium/ancient-maya-water-filtration-guatemala-research-university-cincinatti-b1255639.html
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The Article Was Written/Published By: Harry Cockburn

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