Your body is creating and killing about 2.4 million red blood cells per second.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Only about 2% of the world population has green eyes.
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