Robin Dunbar, a British anthropologist, developed Dunbar's number in the 1990s after discovering a relationship between the average size of a social group and the brain size of primates. The suggested cognitive limit for the number of people with whom someone can maintain a stable social relationship is 150. Exceeding this number is extremely rare, because becoming close to new people causes the quality of some older relationships to deteriorate over time

Yes, you read that correctly. According to Sveaskog, forests cover around 57% of Sweden. That equates to 23 million hectares or roughly the size of the United Kingdom. The Swedish Forestry Act governs forest management in terms of both production and the environment. The Act, among other things, says that there is a responsibility to reestablish forest after it has been felled.

According to tradition, the wizard Merlin brought Stonehenge from Ireland, where ancient giants had erected it, and rebuilt it on Salisbury Plain as a memorial to 3,000 noblemen killed in battle with the Saxons.

Guillermo Gonzalez Camarena invented the thermoscopic adapter for the early color television transmission system in 1942. The first broadcast aired in 1946.

This cat fact will really blow your mind. A study discovered that our little house cats share 95.6% of their genetic makeup with tigers! They also share a lot of the same behaviours such as scent and urine marking, prey stalking and pouncing.

Parenting in flamingos is equal for both roles, in contrast to the observation that only the mother sits on the egg in most birds. The only duty of the parents is to provide the chicks with milk crop until they are old enough to search for prey among their peers.

Around 1770, Franz Mesmer is credited with bringing hypnosis to the public's attention. The Austrian physician was probably aware of earlier societies' use of hypnosis, and he spent much of his career researching hypnosis, hypnotic techniques, and its effects on the human mind. Interestingly, Mesmer referred to hypnosis as "animal magnetism" or "mesmerism," and the latter term is still used occasionally today. (We're guessing you're completely enthralled by this fact.)

While Copernicus is credited with creating the heliocentric concept of our solar system, the Rig Veda was the first to recognize the central positioning of the sun and other planets around it in the solar system. Rig Veda 1.164.13 "The Sun travels in its orbit, which is also moving." Because the sun is heavier than the Earth and other things, they travel about it owing to the force of attraction." The sun moves in its own orbit, yet holds the earth and other heavenly things in such a way that they do not clash via force of attraction, says Rig Veda 1.35.9.

The strangest thing of all time is that certain snails may sleep for up to three years! This is because they require wet circumstances to exist, and if the weather does not provide adequate moisture, they will hibernate. Honeybees, which can flap their wings 230 times per second, are also fascinating creatures. And did you know that baby pandas are born smaller than mice? They're only four ounces! Finally, horses and cows can sleep standing up but only dream while lying down.

The Pacific Ring of Fire, often known as the circum-Pacific belt, is the world's greatest seismic belt, spanning Chile, Japan, and Southeast Asia. With nearly 130 active volcanoes, four minor earthquakes each day, and its location between the most active seismic area on the planet, Indonesia is the hottest point on the Ring of Fire. Because of population density, many Indonesians live perilously close to active volcanoes with regular rumblings.

The Sahara Desert is a vast desert in North Africa that includes portions of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia, and Western Sahara. It is the world's hottest desert, however, due to a lack of humidity, the temperature reduces throughout the night. The average yearly temperature is approximately 30°C although during the warmest months June- September the temperature can soar over 50°C. Temperatures can dip as low as -5 °C at night. Between October and May, when the weather is pleasant, is the best time to explore Tunisian Sahara. During the warmest months, several tour operators suspend operations.

Angkor Wat is Cambodia's heart and soul. The world heritage-listed structure was created in the early 12th century and is the world's largest religious complex.

Swiss astrologer Karl Ernst Krafft was arrested when it was discovered that he had made a prediction about Adolf Hitler that had come true. Using the stars, he predicted that at some point over three days in November 1939, the Nazi leader's life would be in danger. On the second day, a bomb meant for Hitler exploded in a Munich beer hall where he had just been speaking.

According to the National Sleep Foundation, women are twice as likely as men to suffer from insomnia. Sleeplessness at night is noticed in women due to regular hormonal changes caused by menstruation cycles, pregnancy, menopause, or other comparable factors.

In contrast to the 10 trillion cells in our body, a healthy person has between 100 and 300 trillion probiotic bacteria and yeast.

San Marino is made up of the nine municipalities listed below, which are also known as Castelli, which means "castles" in Italian. San Marino, also known as Citta di San Marino, is the country's capital. There are also eight smaller municipalities. Chiesanuova, Acquaviva, Borgo Maggiore, Domagnano, Faetano, Fiorentino, Montegiardino, and Serravalle are some of the towns in the area. Dogana, the Republic's main hamlet, is part of the Castello of Serravalle and is not an autonomous Castello. Each Castello, like an Italian comune, consists of a capoluogo, the Castello's administrative centre, as well as a few smaller villages known as frazioni.

Clark Gregg, who began his MCU arc in the first Iron Man, revealed to Cinema Blend that he was originally supposed to appear in two scenes. Agent Phil Coulson of S.H.I.E.L.D. was, in fact, just an unnamed agent in the script. Gregg's chemistry with Downey and Gwyneth Paltrow impressed director Jon Favreau, who expanded the role. Of course, Coulson would go on to play a pivotal role in the Marvel Universe, appearing in Iron Man 2, Thor, The Avengers, and Captain Marvel, as well as directing the television series Agents of S.H.I.E.L.D.

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.

They eat worms, insect larvae, small crustaceans, larval fish, and other invertebrates. They use their stinging cells to stun, entangle, or kill their prey before eating it. Some species of Hydra have even been known to sting fish to death.

Kalibangan in Rajasthan is one of the most important sites of the Indus Valley Civilization, which existed for around 450-600 years. This location has provided evidence of the first plowed agricultural field. This site also revealed evidence of the first known earthquake (2600 BC), which might have been the cause of the civilization's demise. The discovery of fire altars at the site suggested that the inhabitants worshipped fire. A visit to this location will give you an idea of how the ancient people lived with limited resources. You may take a train to Bikaner because it is the nearest railway station, around 205 kilometers away from Kalibangan.

Part of our propensity for believing in conspiracy theories may be due to a social psychological bias that coincides with our distaste for random events. The propensity to think that the actions of others are intentional rather than the result of external events is known as Fundamental Attribution Error. As a result, when things happen randomly or unintentionally, we may feel compelled to seek a purposeful explanation. This might conceivably contribute to the development of conspiracy ideas.

Vatican City is most likely the only country on the planet without a prison. The country does have a few pre-trial detention facilities. According to the Lateran Treaty, those convicted and sentenced to jail serve their time in Italian prisons. The Vatican government pays for the costs of incarceration.

In 2010, a Southern California school district temporarily removed all copies of Merriam-10th Webster's Collegiate Edition from elementary school classrooms. Why get rid of the dictionary? The school district decided to remove the books after a parent informed the principal of Oak Meadows Elementary School that the dictionary contained an explicit definition of a sex act. The dictionary was deemed age-appropriate by a committee of teachers, administrators, and parents, and the copies of Merriam-Webster were returned to the classroom. Let's hope that parent never finds out about Urban Dictionary!