Assume someone falls into a black hole and an observer observes this. The time of the individual who fell into the black hole slows down in comparison to the one viewing. This is explained by Einstein's Theory of General Relativity, which posits that while travelling at high speeds close to the light, time is altered by how fast you are moving.

Back in the 1970s, Paul and David Merage came up with the idea for microwavable "sandwiches." The product initially appeared on grocery store shelves in 1983.

Just like Venice, Bangkok is also a city built on dozens of canals and with buildings standing on stilts. Although most of these canals have now been paved in, the nickname has stuck. However, another, less-cheerful point of similarity is the sinking of Bangkok. Due to rising sea levels and extensive development, Bangkok is sinking at a rate of 2 - 2.5 cm per year. Parts of Bangkok could be submerged in a few decades, so you might want to prepone your vacation there.

 

It’s a tactile alphabet that can be used to write almost any language. There are braille versions of Chinese, Spanish, Arabic, Hebrew and many others.

In 2023, the probiotics industry will be worth 69.3 billion dollars. The market was worth 16 billion dollars in 2008. Thus, in 15 years, the need for probiotics will have increased by 427%.

A few other fictitious-sounding details about pirates are correct. According to National Geographic, battling pirates would have lost limbs from time to time, and some of them would have replaced their missing appendages with a hook or a wooden peg. "Members of the crew... received compensation for the loss of body parts in action—an early form of worker's compensation," according to the Smithsonian Institute.

True. The Greeks of old would bring a cake with candles on it. To the temple of Artemis, the Goddess of the Hunt and the Moon stood in for the glistening moon. 
As each candle stood for a year that had passed, it wasn't until the 1700s that it started to become a birthday custom.

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.

Girls, on the other hand, are more likely to be taught how to track and budget their spending. According to a GiftCards.com poll conducted in the United States, girls receive less money from their parents, whereas boys in high school and primary school receive around twenty dollars more on Christmas, three dollars more for chore completion, and one dollar more for allowance.

At first, the iPhone was not going to be a smartphone. Steve Jobs actually told his engineers to explore the idea of touchscreen and tablets. Because there were no touchscreen gadgets at the moment. Later, the engineers came with some prototype to Steve Jobs of their touchscreen tablet. However, he liked the design and told the engineers to make a smartphone instead. Because at that time, there were no tablets in the market, and Steve Jobs thought that a new type of device might not be successful. However, later, they obviously made the iPad.

The British Museum was founded in 1753 when Sir Hans Sloane left his collection to the nation. But before the Museum could open to the public, a suitable site needed to be purchased. One of the locations considered was a place called Buckingham House, which was later rebuilt as Buckingham Palace! But the Trustees agreed instead to move into Montague House, the site of the current Museum, and the rest is history! Or should that be geography?

While umbrellas are used and valued by almost everyone who lives in a wet area, they were once thought to be exclusively for women, as they were connected with the stylish parasols ladies would carry on good days to keep the sun off their skin. However, boundaries began to crumble in the mid-eighteenth century, with notable personalities such as benefactor Jonas Hanway using umbrellas at public occasions. Others soon saw the usefulness of the item, and it wasn't long before males were wearing them as frequently as women.

Taz became a popular cartoon character thanks to Looney Tunes. In reality, though, the devil is anything but. According to one research, it possesses the most powerful bite in the planet. Despite weighing just 20 pounds on average, these creatures can apply up to 94 pounds of pressure, giving them a "Bite Force Quotient" of 181. That's about twice as powerful as a hyena and 60 points stronger than a lion.

Astronomers have found more than a million asteroids as of right now. The majority of orbits are located between Mars and Jupiter. Thus, The Main Asteroid Belt is the name given to this area. The belt between Mars and Jupiter's orbits is where the majority of asteroids are concentrated. 
Astronomers have found more than a million asteroids as of right now. The majority of orbits are located between Mars and Jupiter. Thus, The Main Asteroid Belt is the name given to this area.

The oldest cat to have ever lived was 38 years and 3 days old when he passed away. Creme Puff, born on 3rd August 1967 lived until 6th August 2005, and his owner Jake Perry also owned the previous oldest cat record holder, Grandpa Rex Allen, who passed away at the grand age of 34! Whatever Jake Perry’s doing, he’s doing it right!

That's over 3 feet per year! This is because it was created thousands of years ago on a lake. Today, the lake is part of Mexico Metropolis's aquifer system, and water demand is so high that the city is sinking.

Your mattress may contain one million to ten million dust mites, depending on its age. For healthy sleeping, it's crucial to replace your mattress after the suggested amount of time.

After 21 years of marriage, Queen Victoria became a widow. In 1861, her beloved Prince Albert died from typhoid. Consumed with grief, Victoria would spend her next 40 years of life wearing only black clothing, and would rarely be seen in public.

We have approximately 250 eyebrow hairs per brow on average. Untidy brows have been shown to have more than 1,000 hairs, nevertheless!
 

Beyond the skyscrapers, South Korea has stunning natural scenery, with forests covering 64% of the area. Several mountains in the area, including eight that encircle the capital. Visitors attending this month's Winter Olympics in Pyeongchang may enjoy a quiet backdrop of Buddhist temples and dreamy peaks, such as the majestic Seoraksan, which forms part of the Korean peninsula's mountainous terrain. In addition, the nation boasts 2,413 kilometres of coastline, with broad coastal plains to the west and south and approximately 3,000 tiny uninhabited islands far offshore.

During the scientific excavation of the site from 1912 to 1915, Hiram Bingham's team collected thousands of artifacts from the ruins and sent them to Yale University. Ceramics, jewelry, silver pieces, and human bones were among the artifacts discovered. For years, the Peruvian government argued that the artifacts should be returned, until Yale finally returned them in 2012.