Uranus is a planet in the outer solar system, as many students are aware. Neptune is the next known planet beyond its reach, and another huge planet may exist much further away (nicknamed "Planet Nine" by the astronomers who proposed its existence). Surprisingly for planetary scientists, it turns out that Uranus is the coldest planet in our solar system, not Neptune. This is due to Uranus's lack of an internal heat source to augment the heat of the sun.

Except for Chile and Ecuador, the biggest Latin American country shares boundaries with every other South American country. The longest border, which runs 3,400 kilometers/2,113 miles, is shared with Bolivia.

The first version of a vision aid, known as a "reading stone," was invented 1000 years ago. It appeared to be a small magnifying glass. However, the first wearable vision aid is thought to have been invented in the thirteenth century by Italian Salvino D'Armante. So we can thank Italy for both a cool accessory and delicious food.

The first train in India began service on April 16, 1853. Mumbai Locals are the world's busiest railroads, carrying over 2.2 billion people each year. Mumbai also features India's most out-of-date electric train network, established in 1925.

Hong Kong is the eighth most densely inhabited city in the world, with 68,400 inhabitants per square mile. However, the now-demolished renowned Kowloon Walled City in Hong Kong was formerly the world's most densely populated area, with 3.2 million people per square mile! (From Wikipedia)

Have you heard that formula feeding, maybe with a little of rice cereal in the bottle, fills babies' tummies for longer periods of time, allowing them to sleep longer? While it is true that formula takes longer to digest and hence stays in a baby's stomach longer, this unfortunately does not translate into more sleep for the mother. A research published in Pediatrics by West Virginia University discovered that whether mothers gave their newborns breast milk, formula, or a combination of the two, they all received the same amount of sleep and felt similarly pooped.

Fairtrade coffee is more expensive, but it goes a long way toward improving farmer conditions, and farmers spend at least 25% of the Fairtrade Premium on productivity and quality improvements. Fairtrade coffee products have received numerous Great Taste Awards in recent years.

While Angkor Wat is the largest religious complex in the world, the temple ruins cover an area of more than 500 acres - over 50 times the size of Machu Picchu!

The noise produced by a jet aircraft during takeoff is millions of times louder than the sound you normally hear. Such thunderous sounds are known as deafening sounds, and they can inflict discomfort and substantial damage to your ears.

On November 17, 1873, the three neighboring cities of Pest, Buda, and Buda merged to form Budapest. The unification was a significant historical event that resulted in the city's rapid development. Finding a name for the new capital, on the other hand, sparked a lot of debate. Hunvár, Etelvár, and Honder were among the names proposed. Budapest eventually won, becoming the official name of Hungary's capital.

Finding easier modes of transportation than walking becomes crucial if you reside in a region that is primarily covered in snow. As a result, some of the early Inuit tribes are credited with developing qamutiks, or dogsleds, and qajaqs, or kayaks. Larger Inuit communities were frequently ferried across the lake on umiaqs. The same materials that were used to build their vessels were also utilised to build the dogsleds, which were made of wood and whale bones.

The Dussehra celebrations in Kullu, Himachal Pradesh, are another well-known event in India. To take part in this enormous festival, individuals travel from all over the nation to Kullu, also known as the Valley of the Gods. Beginning on the tenth day of Navratri, or Dussehra, it lasts for a week. Lord Raghunath and other gods are carried through the town in a procession to begin.

The best approach to consuming micronutrients like vitamin B-3 is through a balanced diet. Only use supplements under a doctor's guidance to cure deficiencies. You may get some of the advantages of niacinamide from the foods you eat when it comes to general skin health.

In 1996, a team of anatomists at the University of Adelaide in Australia revealed that koala and human fingerprints are readily confused, most likely due to the fact that koalas are primates' progenitors.

In the meanwhile, the sterling silver-copper alloy may be used to make not just jewellery but also cutlery and tableware. Because of copper's hypoallergenic characteristics, sterling silver is non-irritating to the skin.

Andy Serkis had to play King Kong twice for Peter Jackson's King Kong (2005). First, he had to play the giant ape alongside Naomi Watts (Ann Darrow) in a rough-and-ready gorilla costume, so his co-star could react. After principal photography was finished, he had to perform again, this time in a motion capture suit. Andy, fantastic double performance!

Though now famous as the piano player at Rick's Café Américain, Dooley Wilson, the actor who played Sam, was an experienced musician and bandleader—but not a piano player. He was a drummer and mimed the piano playing. "As Time Goes By" was dubbed in later.

The Artist' may lead the film pack this year, with 12 Academy Award nods, but the most nominated movies of all time garnered a whopping 14 nominations. First up was the black and white film All About Eve in 1950. 50 years later, Kate Winslet and Leonardo DiCaprio's doomed love story 'Titanic' sank all competition.

For young and elderly Brazilians, music and dancing are an intrinsic element of their culture and a way of life. The world's largest carnival, held every year in March in one of Brazil's largest cities, Rio de Janeiro, is the best example of this. Brazil has given the globe a variety of popular music and dance genres, including the energising samba, which originated in Brazil in the 1800s.

Red is used at weddings. This may seem odd to Westerners but I’m not so sure: red is the color of passion and love universally so why shouldn’t it be used at weddings?

Since the nail bed does not have any sweat glands, fingernails cannot perspire.

Every book has its own worth. But the most expensive printed book in the world is the 1640 Bay Psalm book. The book is from America and was sold in 2013, in November, for USD 14.2 million.

Most birds are unable to recognize their own appearance. Pigeons, on the other hand, may recognize themselves over an image of another pigeon. Their recognition abilities do not stop there; they can also distinguish between images of various persons.

Halloween evolved from the Celtic festival of Samhain, which marked the end of the Celtic calendar year in Ireland, Scotland, and the Isle of Man. They believed it was a time when spirits or fairies could enter our world, and the Celts would set out treats and food to appease the spirits - sometimes, a place at the table was even set for the souls of the dead. Wiccans continue to celebrate Samhain as a New Year's Eve celebration today.