1

The Great Wall of China is the only man-made structure visible from space.

"Not only is it NOT visible from space (to the naked eye), there ARE other man-made structures that are."

2

You have to wait 24 hours before filing a missing persons report.

"According to the State of California Department of Justice, There is NO waiting period for reporting a person missing. All California police and sheriffs’ departments must accept any report, including a report by telephone, of a missing person, including runaways, without delay, and will give priority to the handling of the report.”

3

Cracking your knuckles makes them bigger/gives you arthritis.

"According to Harvard Health Publishing, “The ‘pop’ of a cracked knuckle is caused by bubbles bursting in the synovial fluid — the fluid that helps lubricate joints. The bubbles pop when you pull the bones apart, either by stretching the fingers or bending them backward, creating negative pressure.”"

4

Goldfish only have a few-second memory.

"Studies have shown that goldfish can remember things for up to 5 months."

5

Bats are blind.

"According to the USGS, “No, bats are not blind. Bats have small eyes with very sensitive vision, which helps them see in conditions we might consider pitch black. They don’t have the sharp and colorful vision humans have, but they don’t need that. Think of bat vision as similar to a dark-adapted Mr. Magoo (a cartoon character with very poor vision).”"

6

Einstein was a bad student who failed math.

"According to the Washington Post, "Einstein's "early teachers did not find him especially talented even though he got high marks. […] He did fine in math, but he did flunk the entrance exam to the Zurich Polytechnic when he first took it — when he was about 1 1/2 years away from graduating high school, at age 16, and hadn’t had a lot of French.""

7

People in the Middle Ages believed the Earth was flat.

"Historian Jeffrey Burton Russell wrote: “A round Earth appears at least as early as the sixth century B.C. with Pythagoras, who was followed by Aristotle, Euclid, and Aristarchus, among others in observing that the Earth was a sphere.""

8

Bulls get angry when they see the color red.

“Bulls, along with all other cattle, are color-blind to red. Thus, the bull is likely irritated not by the color, but by the cape’s movement as the matador whips it around.”– Live Science.

9

Tryptophan in turkey makes you sleepy during Thanksgiving.

"The truth is that there is no more tryptophan in turkey than there is in chicken and beef. We simply get tired because we eat so much."

10

Napoleon was short.

"“Napoleon’s death certificate estimate that his height when he died was between 5’2” and 5’7” (1.58 and 1.7 meters). The discrepancy is often explained by the disparity between the 19th-century French inch, which was 2.71 cm, and the current inch measurement, which is 2.54 cm. Sources consequently estimate that Napoleon was probably closer to 5’6” or 5’7” than to 5’2”. Britannica.

He was above average for the height of French men at the time."

11

If you go outside with your hair wet, you will get sick.

"The only way you can get a cold is through catching a virus, which is spread through bodily fluids, such as when people who are sick sneeze, cough or blow their nose."

12

A higher tax rate means your entire income is taxed at that rate.

“Basically, if you start earning more and move up tax brackets, the ‘marginal’ amount — or the money in the higher tax bracket — is taxed at a higher rate. NOT THE ENTIRE AMOUNT YOU EARN.”– Insider.

13

We only use 10% of our brains.

“‘It turns out that we use virtually every part of the brain, and that [most of] the brain is active almost all the time,’ says neurologist Barry Gordon at Johns Hopkins School of Medicine in Baltimore. ‘Let’s put it this way: the brain represents three percent of the body’s weight and uses 20 percent of the body’s energy.” -Scientific American.