Only about 2% of the world population has green eyes.
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The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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