- Aliens are previous earth civilizations. https://www.scientificamerican.com/article/what-are-the-odds-of-a-de/ 133 comments aliens
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- Babies Are Born with an Innate Number Sense - Scientific American https://www.scientificamerican.com/article/babies-are-born-with-an-innate-number-sense/ 3 comments
- Bumblebees Show Off Their Own Puzzle-Solving Culture - Scientific American https://www.scientificamerican.com/article/bumblebees-show-off-their-own-puzzle-solving-culture/ 0 comments
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