Your body is creating and killing about 2.4 million red blood cells per second.
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Cows can sleep standing up, but they can only dream lying down.
745
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14