Green roofs can reduce a building's energy consumption by 25% and extend roof lifespan by 40 years.
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The vaccination syringe improved medical delivery methods.
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Humans reached the Moon less than 70 years after powered flight.
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Octopuses have three hearts and blue blood.
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The fennec fox has large ears that help dissipate heat.
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A rhinoceros has thick skin for protection.
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A sloth can take up to a month to digest a single meal.
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The Earth's axis is tilted about 23.5 degrees.
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Smiling can influence mood through feedback to the brain.
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