Rio is Brazil's second largest city, with a population of 6.3 million people. However, it pales in comparison to Sao Paulo, Brazil's largest city, which has a population of 12.04 million people.

Santa has a valid pilot's licence! Santa was officially granted a pilot's licence by the United States government in 1927!

Although sunflowers come in a wide variety of sizes and shapes, only one has entered the Guinness Book of World Records. A sunflower owned by Hans-Peter in Germany stands more than 30 feet tall.

A genome-wide examination of insomnia condition discovered that insomnia was linked to specific genetic variants on chromosomes 7 and 9. Chromosome 7 is discovered near a gene involved in brain development and electrical sleep signaling. Similarly, according to a Sleep Journal study, approximately 35% of patients with insomnia had a familial history of insomnia.

Jelly donut is referred to as a Berliner, but not in Berlin. Pfannkuchen is the term used in Berlin. He did in fact give a speech that day. Kennedy was also known to struggle with learning foreign languages. However, he was conscious of his words while he gave that speech. Kennedy made the right statement. In reality, he deviated from his prepared remarks and gave a moving speech to the nervous Berliners.

A category of beetle known as fireflies has more than 2,000 different species. Despite their name, only a few species give birth to glowing adults. For instance, fireflies in the western United States are unable to emit light.

Pigeons can find their way home from 1,300 miles away, believe it or not! Furthermore, they have demonstrated that they can do so after being relocated in full isolation to a region they had never been to before. The cages were even rotated during shipment to keep the birds guessing which way they were going. Scientists aren't sure how pigeons manage to find their way back when there are no visual, olfactory, or magnetic cues to help them. They now believe that pigeons have compasses and map mechanisms that aid in navigation. While the mapping mechanism is unknown, the compass mechanism is most likely based on the location of the sun.

True trivia that may break a few hearts: when the Joker first appeared in 1940, he was supposed to be a one-off event that would disappear after a few incidents. Fans were so taken with his character, and they appreciated how brutal and unpredictable he was, that he was made a regular in the Batman franchise. He's lucky he wasn't cancelled! We would never have spotted these amazing Easter Eggs in the latest Joker film if it hadn't been for the internet!

Though it would quickly cruise its way into film history, the script for Taxi Driver came together in just a few days. As screenwriter Paul Schrader told The Hollywood Reporter, "I crashed at an ex-girlfriend's place, and I just wrote continuously. The first draft was maybe 60 pages, and I started the next draft immediately, and it took less than two weeks."

Glass is one of the most durable and resilient man-made materials.

There is a whole business dedicated to creating the flavors of grocery store foods. Working with phantom aromas or aroma-taste interactions, scientists discovered that consumers link "ham" with salt. Simply adding a ham-like fragrance or flavour to a cuisine might cause your brain to interpret it as saltier than it is. The same idea applies to the aroma of vanilla, which many associate with sweetness.

Kratos is a video game character, although he is also based on literary works from Ancient Greek mythology. Cratus is Pallas and Styx's son. Pallus and Styx are respective war gods and underworld goddesses, while the name "Kratos" is also related with things like "strong" and "power." Although Kratos is inspired by his Ancient Greek counterpart, the two are not identical. Kratos despises the other gods and has an insatiable drive for power, whereas Cratus is an enforcer of the celestial throne.

Mount Sinai is the mountain that Moses climbed to receive the 10 commandments. Located in the Sinai Peninsula, this mountain is sacred in both Christian and Islamic religions. It is an important pilgrimage site and stands at 2,285 meters ( 7,497 feet) high. It is here you’ll find the UNESCO World Heritage Listed Saint Catherine Monastery that we mentioned above. 

Any claim that chamomile will improve hair quality is speculative at best, although Kluge observes that due to its cooling and modestly anti-inflammatory characteristics, a chamomile tea hair rinse could theoretically help soothe dry and irritated scalp issues like dandruff or itching. There isn't enough scientific evidence to support its usefulness, but if you have any on hand, it can't harm to give it a shot.

Bamboo is grass, although many of the bigger woody bamboo species resemble trees and are commonly referred to as "bamboo trees."

If you’ve watched your little kitty charging around the living room when they’re feeling lively you know that cats are pretty quick, but you won’t believe this cat fact. They can hit speeds of around 30mph which is so fast that they could beat Usain Bolt in a 200-meter dash!

Contrary to popular belief, glass is not categorized as a solid, liquid, or gas. Glass cools to become an "amorphous solid" that permits molecular movement within the glass.

The Sun sets directly at the end of many of New York City's major streets twice a year because the city is built on a grid that is rotated 29 degrees clockwise from true east-west. This results in a stunning sunset, with the Sun nestled in between the rows of buildings and slightly above the horizon.

Its exact position is uncertain, and experts are divided on whether it ever existed at all. Those who believe it existed agree that it was most likely located in what is now Poland's Wollin. Others debate this position, but all agree that Jomsborg was on the Baltic coast, between Poland and Germany. According to mythology, Jomsborg existed during the late tenth and early eleventh centuries. According to mythology, King Magnus the Good eventually destroyed it in 1043. A gold disc discovered in 2014 that references the stronghold and King Harald Bluetooth is one piece of historical evidence supporting Jomsborg.

It was at a party in Cambridge that Plath met her eventual husband, poet Ted Hughes. On June 16th, 1956, Plath married Hughes, paying homage to the day on which James Joyce's Ulysses takes place. Unfortunately, the writers' marriage was tumultuous and painful and recently discovered letters reveal that Hughes abused Plath.

Lincoln was a certified bartender in addition to being a wrestling champion. In 1833, the 16th President opened Berry and Lincoln, a saloon in New Salem, Illinois, with his friend William F. Berry. Berry, an alcoholic, eventually forced the shop's closure after consuming the majority of its stock.

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!

Rorschach felt that the results of his test may reveal a person's psychological condition. Those who ruminate on details may see more pictures in motion, whereas creative types may experience more images in motion. Depressed people were reported to be unconcerned by the introduction of color, whilst "neurotics" were said to be disturbed by the abrupt burst of red. Teenagers were the only people he believed the test failed to examine because they had too many characteristics with the seriously crazy.