Mars had an oxygen-rich atmosphere around 4 billion years ago
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There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
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Cows can sleep standing up, but they can only dream lying down.
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Your thumb is about the same size as your nose.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81