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New clues revive the question: was there an advanced civilization before us?
Across deserts, jungles, and polar ice, new discoveries are quietly stretching the story of civilization further back in time ...
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A Provocative Theory by NASA Scientists Asks: What If We Weren’t the First Advanced Civilization on Earth?
In the grand sweep of Earth’s four-billion-year history, 300 years is barely a blink. And yet, that blink — our industrial era — has already reshaped the atmosphere, oceans, and sediments. If ...
How could the principle of "radical mundanity" proposed by the Fermi paradox help explain why humans haven't found evidence of extraterrestrial technological civilizations (ETCs)? This is what a ...
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