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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It has been scientifically proven that stroking a cat can lower one's blood pressure!
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You forget 90% of your dreams.
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We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
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The human sigh acts as a physiological reset button.
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Babies crawl an average of 200m a day.
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Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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