If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
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Your body is creating and killing about 2.4 million red blood cells per second.
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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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