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How The Maya Figured Out Water Purification

When we think of the Maya civilization, tall stone pyramids come to mind. But these ancient people were quite the engineers! Recently, scientists made a remarkable discovery in the city of Tikal in modern-day Guatemala. Here, they found evidence of an elaborate water filtering system within one of the city’s largest water reservoirs. They believe the filtering system may have been used to remove toxic metals like mercury, poisonous algae, and bacteria. Impressively, these materials are still used in modern-day water filtration, which just goes to show how technologically advanced the Maya...

Melting Ice Reveals Viking Treasures

When you hear of the Vikings, you might think of the brave explorers who wore horned helmets and bravely sailed across the Atlantic. Throughout history, these adventurers have been romanticized in creative works inspired by Norse mythology - a notable character is Thor. But while they were notorious for their plundering, the Vikings were clever traders as well. A lost mountain pass in north-central Norway has yielded a treasure-trove of artifacts dating from 300-1500 AD. These artifacts -- from shoes and mittens to a knife, walking stick, horseshoes, and sled pieces -- give us a glimpse into...

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