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#6041
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#6042
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#6043
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![]() ![]() Even if something is ancient it can still be useful. The Mycenaean Bridge at Kazarma was built more than 3,000 years ago but is still used by modern Greeks. The arch bridge is an impressive feat of engineering, as it doesn't use any type of adhesive to hold itself together. It was also built with curbs, presumably to keep speeding chariots from falling off. |
#6044
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#6045
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![]() ![]() The country that was home to Picasso and El Greco is also believed to be home to the world's oldest cave paintings. A study by the University of Bristol, based on carbon-dating results in 2012, determined that the prehistoric dots and crimson-hued stencils in a cave on Spain's northern coast are more than 40,000 years old. Archaeologists think Neanderthals could be the oldest painters. |
#6046
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![]() ![]() Found in Krapina, Croatia, in 2015, the oldest jewelry is about 130,000 years old. This prehistoric bling, found at a Neanderthal site, is in the form of a necklace or a bracelet of eagle talons. The claws bear evidence of cut marks and polishing. Scientists believe the jewelry was used for ceremonial purposes. |
#6047
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![]() ![]() When most people hear the word "fossils," they likely think of dinosaurs, but scientists can learn a lot from the fossilized remains of organisms of all sizes. In 2017, researchers announced they had discovered tiny bacteria fossils in layers of quartz found in Canada that are believed to be at least 3.8 billion years old. Scientists believe these fossils can help us learn about the very first lifeforms that took shape after Earth formed. |
#6048
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![]() ![]() The oldest known materials of any kind on the planet are zircon crystals found in western Australia's Jack Hills region that are 4.4 billion years old. Elements in these zircons suggest they came from water-rich, granite-like rocks. The presence of quartz as well as the result of isotopic studies of the materials suggests that continental crust was forming very early in Earth's history and that tectonic activity was occurring as well. |
#6049
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#6050
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