Pregnancy tests have been around since 1350 BC. Egyptian women urinated on wheat and barley seeds to determine if they were pregnant or not
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Europeans were afraid to eat tomatoes when they were introduced.
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The man with the deepest voice in the world can make sounds that people can't hear
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Cows do not have upper front teeth. They use this with their lower teeth to pull out grass
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Thanks to 3D printing, NASA can send tools to astronauts via email
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Only a quarter of the Sahara Desert is covered with sand. Most of it is covered with gravel, although there are also mountains and oases
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Bananas grow upside down. As they get bigger, the fruits turn towards the sun, forming a characteristic curve
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Most volcanoes probably stopped erupting about a billion years ago, but NASA research suggests that there could still have been active lava flow 100 million years ago, when dinosaurs were still roaming
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Dogs usually start sniffing through the right nostril and then keep it there if the scent could signal danger
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Avocado named after reproductive organs. The native peoples of Mexico and Central America used the Nahuatl word āhuacatl to mean both "testicles" and "avocados"