Your body is creating and killing about 2.4 million red blood cells per second.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
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