Cows can sleep standing up, but they can only dream lying down.
745
Only about 2% of the world population has green eyes.
36
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.
25
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
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