By drumming and fluttering their pointed appendages, crabs produce sounds that can only be described as crustacean Morse code. Some crab species have a particularly big claw that is utilised for communicating.

Iguanas do have blood. Because of the presence of biliverdin, a consequence of hemoglobin breakdown, their blood is often greenish in hue. Iguanas have a renal portal blood system, which filters blood from the rear limbs before it enters the main circulation.

Brazil produces roughly 40% of the world's coffee, far outpacing other coffee-producing countries. They've managed to keep the top spot for the last 150 years, and their coffee plantations cover approximately 27,000 km2. I don't think any other country will be able to dethrone them any time soon!

What? That much is true. A 2013 research that used data from the 2011 census found that just 40% of Afrikaans speakers are white. The remainder are members of different races, primarily black, coloured, and Indian.

A procedure to remove a cataract was first successfully carried out in 1747 by French ophthalmologist Jacques Daviel. The treatment was only carried out in the most extreme circumstances because the entire lens was removed. Unfortunately, other fields of medicine had not evolved as much. The incision remained open because fine sutures were not yet invented. Sandbags were employed to keep the patient motionless while the injury healed.

Despite the fact that food never enters the pancreas, the organ is crucial to digestion. It secretes pancreatic fluid, which is transported to the duodenum via the pancreatic duct. The fluid's enzymes assist in the breakdown of fat, protein, and carbohydrates once it enters the digestive system. It performs the role of an exocrine gland by secreting a substance through ducts to other areas of the body. It also performs an endocrine function, secreting two hormones into the bloodstream to aid in blood sugar regulation. When you have too much sugar, insulin is released, and when you don't, glucagon is released.

Few people are aware that the Chhath Puja Festival is held twice a year. It is observed twice a year, once in the winter and once in the summer. Kartik Chhath is observed in October or November, while Chaiti Chhath Puja is observed after a few days after Holi.

According to a number of historical sources, Genghis Khan and his offspring were Caucasians. For instance, Rashid Al-Din, an ancient historian, asserts that he had red hair and green eyes. There isn't any solid proof that Genghis Khan was Caucasian, though.

A glass of wine vibrates at a regular frequency, and a high musical note can break such a glass. The frequency of the musical note must be equivalent to the natural frequency of the glass. Because the frequencies of the note and the glass are the same, the energy is transferred to the glass, which vibrates so violently that it shatters. The phenomenon is known as resonance. The technique can be used to improve the sound of some musical instruments.

A black and white film or photograph is often more difficult to recall than a colour image. Color, according to scientists, has a stronger appeal to the senses and thus leaves a more lasting impression on the memory.

We watch television far too much as a culture. Unless you are watching something educational or spending quality family time when everyone is too exhausted to do anything else, relaxing is typically a complete waste of time. However, there is no more wasted time if you crochet. I finished most of my projects while watching television, and each time I did so, I felt accomplished. Now you can look back on your Netflix binge with pride and WITHOUT feeling like a sleuth!

Hungary has a plethora of underground hot water sources. It's no surprise that Budapest is regarded as the world's thermal bath capital. There are dozens of spas and baths in Budapest, some of which are housed in magnificent buildings such as the Szechenyi, Gellert, or Kiraly Baths.

The first emperor of China, Qin Shi Huang, started building the Terracotta Army in 246 BC, shortly after assuming the throne at the age of 13. 
 

Pigeons have the ability to perceive wavelengths that humans do not. This enables them to detect volcano eruptions and impending storms that meteorologists have yet to detect.

Women are superior conversationalists and social leaders because they are better at reading faces, gestures, and voice tones from birth. Even in a group of people, an alpha-type female would likely lead all social interactions rather than an alpha male.

Fennel extract benefits the skin by shielding it from free radical damage and increasing skin cell lifetime. They are rich in minerals including potassium, selenium, and zinc. These minerals are essential for hormone regulation as well as regulating blood oxygen levels. They are commonly used to treat various skin conditions such as acne, rashes, and dryness.

Santa Claus did not always wear red robes. He used to dress in green, purple, or blue clothes, and this was a long-standing tradition at the North Pole. It was the company Coca Cola that decided to dress him in red in order to match their brand colour, which had a red background.

Crystals are not like other rocks you might come across. Despite their origins in minerals or rocks, crystals exist in a'vegetative' condition, which means they have some type of dormant life. They develop deep within clusters as well. As a result, they are said to have some kind of healing energy or ability that links with the energy points in living organisms, including humans. As a result, you should use caution while engaging with these chemicals, just as you would with other living organisms. It may be frightening for some to consider, but some believe crystals carry much-needed healing power.

Friends co-creators David Crane and Marta Kauffman wrote a seven-page pitch for a new sitcom called Insomnia Café in the early 1990s. Aside from the different title, the plot was quite different from what became known as Friends. For example, Joey and Monica were supposed to be the love interests rather than Ross and Rachel.

The majority of animal species in the Antarctic eat krill, and some, like the Adélie and chinstrap penguins, rely almost entirely on it for nutrition. Even the teeth of crabeater seals are specially designed for consuming krill. Furthermore, according to recent studies, humpback and fin whales, whose populations are now stabilised after centuries of whaling, consume a combined 2 million metric tonnes of krill annually from a small area close to the Antarctic Peninsula where the majority of the world's commercial krill fisheries are based.

Rio de Janeiro translates to "January River" in English. When the first explorers landed in Rio in January, they mistook the bay they arrived at (today known as Guanabara Bay) for the entrance of a river.

Our smartphones may be an important part of our everyday lives. Still, this handy technology may be hiding a not-so-great surprise after all. A study of mobile phones used by secondary school pupils found that they were significantly infected with potentially dangerous germs. According to experts, cell phones, in fact, contain 10 times more germs than most toilet seats.

Mulan was originally conceived as a straight-to-video film called China Doll, about a poor, oppressed Chinese girl who is whisked away by a white guy to live a happier life in the West. When a writer discovered the Chinese poem "The Song of Fa Mu Lan," the studio decided to combine both projects and create Mulan. Knowing the film's slightly racist, tone-deaf origins, on the other hand, casts the film in a whole new light.

Indie dogs have a far higher level of immunity than dogs of other breeds, and they may have the finest gene pool for Indian circumstances. Indian pariah dogs are the least likely to contract the illnesses that the pedigree frequently succumb to since they have developed through the generations to suit the conditions of the subcontinent.

According to swissinfo.ch, Switzerland has one of the greatest shares of internationals among other nations, accounting for around 24.6% in 2015. More over 80% of foreigners in Switzerland are from Europe, with nearly half coming from France, Germany, Italy, and Portugal alone. Switzerland leads the European immigration countries, with 19 arrivals per 1000 population on average in 2014, considerably ahead of Germany (11), the United Kingdom (9.8), Spain (6.6), and France (5.1).