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Russia sold Alaska to America for $7.2m in 1867.
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A look at vinyl record grooves at around 1000x magnification. You can see the waveforms of the sound itself...
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It is possible to die from a broken heart — This condition is called Stress Cardiomyopathy.
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This is what the crystal clear water of Papa New Guinea looks like.
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Every two minutes, we take more pictures than all of humanity in the 19th century.
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