Everyone is familiar with the nursery rhyme "Mary Had A Little Lamb," but you may not be aware that it is based on a true storey. Mary Sawyer was her name. She was an 11-year-old girl from Boston who was accompanied to school one day by her pet lamb. In the late 1860s, she raised funds for an ancient church by selling lamb wool.

Calvin Coolidge, the former president of the United States, owned a variety of pets, including a donkey and a bobcat. Oh, and a few of lions. They were given to them as cubs by the South African government. Tax Reduction and Budget Bureau are their names.

A microphone can convert sound waves into electrical signals that fall and rise in a manner that is comparable to the sound wave pattern you are attempting to record. Analog recording techniques, which save sound wave patterns as a wavy groove etched into a plastic disc, can be used to store auditory waves. The model can also be saved as a magnetic print on plastic tape.

Near Santander lies the Altamira cave. In this cave, a lot of prehistoric drawings have been discovered of very varied shapes and meanings. The fun fact about Spain is that this cave is so impressive and of historical importance that people began to call it the Sistine Chapel of Prehistory.

The Vaccinium genus includes huckleberries, bilberries, and blueberries, all of which are closely related to the cranberry.

When you hear crickets chirping on a warm summer evening, don't be afraid to try this easy trick to determine the temperature. To determine the temperature in Celsius, simply count how many chirps there are over a period of 25 seconds, divide by 3, and then add 4 to get the frequency of a cricket's chirps.

According to a 2017 Runners World poll, 40% of women have been harassed while running outside (and 58% if you're under 30), whereas men are not catcalled while running.

The Carolingian Empire was a European empire that included what is now France, Italy, and the Netherlands. It also covered sections of Austria, Spain, and the majority of Germany. The name derives from its founder, Charles the Great, or Charlemagne as he is more popularly known. Charlemagne destroyed the Frisians in what is now the Netherlands and the Saxons in Northern Germany throughout his conquests. Both the Frisians and the Saxons were Viking adversaries who had previously kept them in check. As the Carolingian Empire fell following Charlemagne's death, the now-unchecked Vikings exploited Europe's vulnerability.

The domestic silkworm Bombyx mori produces the majority of the world's silk, subsisting almost entirely on mulberry leaves. After reaching adulthood, the silkworm produces a fine fibre that is wound into a compact cocoon. Fibroin, which makes up the core filament, and sericin, a gooey substance that holds it all together, are the two main proteins that make up the fibre. The individual filaments of silk are slowly and carefully unwound from the cocoon and reeled together to create one very long, continuous strand of silk yarn. Silk is an entirely natural fabric if it is left undyed and untreated.

According to the Ancient History Encyclopedia, Herodotus wrote in 440BC that when a pet cat died in Ancient Egyptian times the family members would shave off their eyebrows in mourning. Now that’s an interesting cat fact!

When the king queried his companions about the wonder of the idol and how it stayed in the air without a prop or support, some said that it was kept up by some secret support. The monarch asked someone to walk around with a spear and feel all around, above and below it, which he did but encountered no obstacles.

The most dramatic stock market meltdown in US history happened on Black Tuesday, October 24th, 1929. It is often assumed that the financial crisis resulted in innumerable suicides, however this was not the case. There were two of them.

The scientist is most famous for calculated gravity, but it’s also believed that Isaac Newton invented the cat door. How Stuff Works writes that when Newton was working on his experiments at the University of Cambridge he was constantly interrupted by his cats scratching at the door. So he called the Cambridge carpenter to see two holes in the door, one for the mother cat and one for her kittens! Apparently, these holes can still be seen at the university today.

Kolkata has always promoted science and technology, and the city has produced some of the world's most renowned scientists. Birla Planetarium, Asia's largest, is now the world's second largest. It was built in 1963 and inaugurated by the then-Prime Minister, Jawahar Lal Nehru. Let us also mention that Science City is the largest scientific culture centre in the Indian subcontinent.

In the history of Disneyland, there have only been four unscheduled park closures. After the assassination of John F. Kennedy, the Northridge earthquake in 1994, and 9/11, the United States observed a national day of mourning. Also, due to the COVID-19 outbreak, the most recent closure.

We’re seeing a lower incidence of gastric cancer these days, partly because our diet contains fewer foods that cause cancer (as refrigeration became widespread, we ate fewer smoked and cured meats).

We now also know that H. pylori can cause stomach cancer, but H. pylori are relatively easy to diagnose and treat.

When it comes to creepy facts about mirrors, no one beats Bloody Mary's mirror folklore. It is said that if you chant 'Bloody Mary' 13 times in a dark room while looking in the mirror, she will appear. This is a myth that we are too scared to test for ourselves. This myth, which dates back to 1978, is said to summon a vengeful spirit, which is a creepy fact about mirrors.

According to Alzheimer's Orange County, "as the size and proportion of the U.S. population 65 and older continue to expand, the number of Americans with Alzheimer's disease and other dementias will climb each year." The number of persons with Alzheimer's and other dementias is predicted to increase by more than 40% from 2015 to 7.1 million by 2025. With an estimated 13.8 million, this will almost triple by 2050.

Beagles enjoy making noise. This breed might not be the best choice for you if you'd like a new BFF that is a little more reserved. They enjoy barking, howling, and even a vocalisation known as baying, which sounds somewhat like a yodel. Most individuals have no problem with this. Actually, a lot of people find it amusing. Consider it your friend's way of saying hello.

Almonds are members of the prunus family, which includes peaches, cherries, and apricots. The nuts that we are so acquainted with are actually the fruit's seed. The fleshy section of the almond fruit, unlike its fruity sisters, cannot be eaten.

Sleep rejuvenates the body, and dreams revitalise the mind. This is because dreams are similar to creativity, according to the American Psychological Association. The way the brain solves problems in dreams is similar to how it thinks creatively in the waking world. As a result, many artists are more likely to be inspired by their dreams and to think creatively while awake.

The music of Wilhelmus, the Dutch national anthem, dates back to between 1569 and 1572. This makes it the oldest melody used in a country’s national anthem, although it did not become the official Dutch anthem until 1932. 

The lyrics were also written at least 400 years ago and they refer to “Dietse Bloed”, an old word for Nederlands (Dutch).

Very few countries measure things using the Imperial System. This means that they measure weight in pounds and distances in inches rather than the more common kilograms and centimeters. Only the United States and Liberia retain this system. Just be careful when you’re looking at the Myanmar facts and figures to make sure you get the right measurement!

They specifically eat dust-borne human skin cells. (They are less concerned with the dust's inclusion of dirt, soot, and pollen.) According to the Asthma and Allergy Foundation of America, you shed 1.5 grammes of skin each day (AAFA). Although it may not seem like much, that will feed a million dust mites. Yes, you read that correctly. Dust mites number one million.