It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.
If you go blind in one eye, you'll only lose about one-fifth of your vision (but all your depth perception.)
The letters in "Listen" are the same ones as in "Silent"
About 75 acres of pizza are eaten in in the U.S. Everyday.
American Airlines saved $40,000 in 1987 by eliminating one olive from each salad served in first-class.
40 percent of McDonald's profits come from the sales of Happy Meals.
The average person spends two weeks waiting for a traffic light to change.
The focusing muscles of the eye move about 100,000 times a day. To give the leg muscles the same exercise would involve walking 80km (50 miles) a day.
Bruce Lee was so fast that they actually had to slow a film down so you could see his moves. That's the opposite of the norm.
Bamboo can grow up to 3 ft in 24 hours.
According to German researchers, the risk of heart attack is higher on Monday than any other day of the week.
The Statue of Liberty's index finger is eight feet and one inch long.
If you ate too many carrots, you'd turn orange.
Read some more Thursday Thirteens at: http://thursday-13.com/