Mars had an oxygen-rich atmosphere around 4 billion years ago
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Your body is creating and killing about 2.4 million red blood cells per second.
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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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It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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You forget 90% of your dreams.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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