The Amazon River is the second longest river in the world. It stretches for around 6,400 kilometers/4,000 miles. The river runs through Peru, Colombia, and Brazil before entering the Atlantic Ocean.

Brazil's people, culture, and cuisine are really global melting pots, since it is mostly made up of immigrants from nations as different as Japan, Italy, Syria, Germany, Korea, Lebanon, and China. Sao Paulo is believed to have the largest Japanese population outside of Japan. Brazilians nowadays are said to be descended from three ethnic groups: Europeans, Africans, and Amerindians. All of this comes together nicely to give Brazil's culture a distinct liveliness.

The northwestern Brazilian city of Manaus, on the banks of the Negro River, is located in the centre of one of the world's most lush jungles. Manaus, the Amazon's largest city and a major port, is a well-developed and busy metropolitan centre with a population of over 2.5 million people. However, the metropolis' position is unusual in that it is totally encircled by the Amazon Rainforest.

Brazil is one of the world's most sensitive and significant biodiversity hotspots, with an estimated four million plant and animal species. The Amazon Rainforest, which covers 60% of Brazil, is responsible for most of this biodiversity.

Mongolia is the home of one-third of the world's population of snow leopards. A snow leopard can't roar or purr, which is a fun fact.

Nail painting has been practised since 3000 BCE. There is archaeological evidence that the Ancient Babylonians used a solid gold manicure set to paint their nails before battle. People used beeswax, egg whites, gelatin, and vegetable dyes in Ancient China during the Ming Dynasty.

Many people believe that when a sleeping dog or cat wags its tail or swats its paws, it is dreaming. While it's difficult to say for certain, researchers believe that most animals, including mammals, birds, reptiles, and fish, go through sleep stages, including REM and non-REM, and thus dream.

A lucid dream is one in which you are aware that you are dreaming while still sleeping. Lucid dreaming is thought to be a state that combines consciousness and REM sleep, in which you can often direct or control the dream content.

Calvin S. Hall, PhD, collected over 50,000 dream accounts from college students over the course of more than 40 years. During the 1990s, Hall's student William Domhoff made these reports available to the public. Many emotions are experienced during dreams, according to the dream accounts.

The paralysis of voluntary muscles is characteristic of REM sleep. REM atonia is a condition that prevents you from acting out your dreams while you are sleeping. Simply put, your body does not move because your motor neurons are not stimulated. While the sensation can be frightening, experts say it's perfectly normal and should only last a few minutes before normal muscle control returns.

Mongolia is home to the two-humped Bactrian camel. The Thousand Camel Festival is organised by a local non-governmental organisation dedicated to preserving and protecting the Bactrian camel population, which has been progressively dwindling for the previous twelve years. At the event, you'll be able to engage with the camels and learn about the nomadic lifestyle of camel herders firsthand.

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.

Even though your body is sleeping, your mind is more active than when you are awake. During dreams, your mind is learning, problem solving, and filing, sorting, and making sense of all the information you absorbed during the day.

When it comes to the content of their dreams, researchers discovered some differences between men and women. In several studies, men reported dreaming about weapons significantly more frequently than women, while women dreamed about clothing references more frequently than men. Women have slightly longer dreams with more characters than men. When it comes to the characters that appear in dreams, men dream about other men twice as often as women, while women dream about both sexes equally.

With 3863 hours of sun every year, Aswan is the third sunniest spot in the planet, averaging 10 hours of sun per day!

Building pyramids kept the Ancient Egyptians occupied! Over 130 pyramids have been discovered in Egypt so far, and archaeologists are continually searching for more!

Built to restrain the roaring waves of the world's longest river, the Nile, the Aswan high dam is the world's biggest dam.

A fascinating fact about the Indian Ocean is its lack of marine animal life, which is related to the ocean's greater water temperature. This water is the hottest on the planet, giving plankton and other animals limited room to flourish.

One of the lesser-known facts of the Indian Ocean is that it has a number of tectonic plate boundaries, notably the Rodrigues Triple Point, where the African, Indo-Australian, and Antartic continental plates collide.

River runoff from many regions of the world, including the Ganges and Brahmaputra, two of the world's biggest rivers, flows into this ocean. Because of its proximity to the equator, the evaporation rate is still rather significant.

The immensity of the Indian Ocean is the first piece of information that grabs anyone's attention. And it's not only big on the outside; it's also big on the inside. The Indian Ocean, which covers over 20% of the earth's total surface area, contributes significantly to the world's water burden.

The Indian Ocean has one of the lowest oxygen concentration of any ocean on the planet, owing to a higher evaporation rate than runoff or precipitation intake. This distinguishes life development in the Indian Ocean.

Are you prone to mosquito bites? Iceland will suit you perfectly! Iceland is mosquito-free, thanks to a lack of small ponds and temperatures that are unfavourable for mosquito breeding – so you can sleep with your windows open anytime you like.

If you go shopping at the Christmas Market in Nuremberg, Germany, you'll be participating in a tradition that dates back hundreds of years. Proof of this can be discovered in a little box kept safe by the Germanisches Nationalmuseum. The modest gift is inscribed, "Sent to Regina Susanna Harßdörfferin by Miss Susanna Eleonora Erbsin (or Elbsin) on the occasion of the Christmas Market of 1628."