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In fact, I can typically find a banana for less than a dollar in most places!

Fruit is meant to be a good part of a balanced diet, so even if you do end up spending a few bucks more on your favorite fruit, at least it's for a worthy cause.

Even something like pineapples, a tropical fruit which can only be grown in certain climates, are still easy to find almost anywhere.

But what if I told you there was a certain type of pineapple that is worth thousands of dollars?

To be fair, that wouldn't be too far off from how things were a few centuries ago.

To put things into perspective, let's take a step back in time!

In the 1700's, pineapples used to be a status symbol of wealth.

However, there are still a few pineapples with a hefty price tag on them.

The odd strategies used here are reflective of older techniques in order to grow this tropical fruit in a colder climate.

In fact, the structure these rare pineapples are grown in was unearthed in 1991 and renovated just two years later to a working state.

However with the manpower over the course of the 2 years it takes to grow a pineapple, the cost to make each pineapple is $1,300.

For a long time, London was a small city.

Greater London has 33 London Boroughs (neighbourhoods) and a mayor.

The old City of London is only a square mile in size but has its own Lord Mayor.

Another famous old part of Greater London is Westminster, which was always a different city from the City of London.

In Westminster is Westminster Abbey (a cathedral), The Palace of Westminster (the Houses of Parliament, with Big Ben), and 10 Downing Street (where the Prime Minister lives).

Berlin is a world city of culture, politics, media and science.

There are a lot of technology companies in the city.

A tornado is a tube of violently spinning air that touches the ground.

They cause a lot of damage to anything in their path.

In the United States, a tornado has happened in all states.

A tornado can have wind speeds of over 300 miles per hour (480 km/h).

Most tornadoes have wind speeds less than 110 miles per hour (180 km/h), are about 250 feet (80 m) across and travel a few miles before disappearing.

Tennis is a racket sport that can be played individually against a single opponent (singles) or between two teams of two players each (doubles).

Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court.

The object of the game is to maneuver the ball in such a way that the opponent is not able to play a valid return.

The player who is unable to return the ball will not gain a point, while the opposite player will.

The sport can be played by anyone who can hold a racket, including wheelchair users.

A recent addition to professional tennis has been the adoption of electronic review technology coupled with a point-challenge system, which allows a player to contest the line call of a point, a system known as Hawk-Eye.

Tennis is played by millions of recreational players and is also a popular worldwide spectator sport.

Walmart is a family-owned business that was founded in 1962 by Sam Walton in Rogers, Arkansas.

Sam Walton was a businessman and former employee at JCPenny.

Penney who purchased a Ben Franklin Store in 1945 from the Butler Brothers.

A CEO at Walmart makes approximately 1,034 times more money than an average Walmart employee.

It is estimated that the WAlmart stock owned by the Waltons would fill a big backyard pool with gold if it were translated from dollars to gold.

A central processing unit (CPU) is an important part of every computer.

The CPU sends signals to control the other parts of the computer, almost like how a brain controls a body.

The CPU is an electronic machine that works on a list of computer things to do, called instructions.

A list of instructions that a CPU can run is a computer program.

The clock rate, or speed of a CPU's internal parts, is measured in hertz (Hz).

The instructions in a 32 bit CPU are good at handling data that is 32 bits in size (most instructions "think" in 32 bits in a 32 bit CPU).

Likewise, a 64 bit CPU is good at handling data that is 64 bits in size (and often good at handling 32 bit data too).

The size of data that a CPU handles best is often called the word size of the CPU.

This means that the CPU is just a single chip.

This is called a microcontroller.

A little over ten years ago now, the Airbnb story began in San Francisco, 2008.

The result of all of this hard work was Airbnb, a revolutionary online marketplace for renting rooms and apartments.

This breakthrough in online lodging has become a massive success, bringing in hundreds of millions of dollars annually and operating in a staggering 192 countries worldwide.

With the debt piling up and the landlord on their tail, for rent arrears, Brian Chesky, Joe Gebbia, and Nate Blecharczyk, found themselves between a rock and a hard place.

With no immediate options available to them to cover their costs, the three of them got creative and decided to rent out an airbed in their apartment to budget-conscious tourists or those simply in need of a safe place to lay their heads.

This enterprise soon took off, and over time it evolved into the Airbnb we have today, with a little cheeky nod to its birth all those years ago, still in its name.

Airbnb was formed in San Francisco in 2008, and it's in that very city where Airbnb plays host to it's most loyal customers and fans, with the Sanfranciscan's on average spending five and half days in each property and splashing out a whopping $1,045 for their stay.

Before they became a massive global success and a license to print money, the company required some start-up cash.

They were a roaring success, shifting thousands of units, and securing that much-needed start-up capital.

In only eleven years, they have conquered the four corners of the globe, reaching a staggering 192 countries worldwide.

The only countries they are not available in are either war-torn or living under a military dictatorship, which is totally understandable.

Not bad for three down on their luck guys struggling to pay rent, a little over a decade ago, right?

Older folk are flocking to the online marketplace, in record numbers, opting for a home-away-from-home experience, instead of the one size fits all, assembly line hotels, which often feel impersonal and lacking in charm.

Airbnb's first year was very successful for the three founders, it changed their lives that year and kept a roof over their heads, and they only had four hundred guests!

Jump forward eleven years later, and an eye-watering four hundred guests now make a booking every two minutes.

A staggering seventy-five Airbnb hosts make at least a million dollars a year by renting out their properties.

And if that sounds impressive, one of them managed to make fifteen and a half million in just twelve months.

Starting up in their apartment in San Francisco in 2008, Airbnb had little use for an office, but as the company grew, this quickly became a necessity.

Now, in 2019, Airbnb has offices in thirty-four cities worldwide, giving them a global reach and customer service that spans every continent.

If a tiny garden studio or an igloo isn't for you, you will be pleased to hear that Airbnb also has some enormous properties for rent on its site.

Giving fans the chance to experience a piece of history for themselves;

Unfortunately, the original air bed had long since burst, being replaced by a sofa, which guests described as surprisingly comfortable!

These are the kind of number's hotels, and B&B's can only dream of achieving and is a testament to their hard work, attention to detail, and most importantly, their customer service skills.

Our solar system is made up of a star, eight planets and countless smaller bodies such as dwarf planets, asteroids and comets.

The Milky Way is a spiral galaxy.

Beyond the orbit of Neptune (the furthermost planet), it takes a long time to leave the Solar System.

Our solar system is a region of space.

It has a stunning array of scenery from the beaches of Qinhuangdao to a desert corridor between tall mountain ranges.

The "Long Wall" has a long history — more than 2,300 years.

It was designed to be at least three times the height of a man.

The Great Wall was not just a wall.

The Great Wall is a China icon.

Figuratively this has come to mean 'to get over difficulties before reaching a goal'.

A robot is an artificial intelligence.

It means robot acts instead of a person, doing things it is designed for.

Robots are usually machines controlled by a computer program or electronic circuitry.

Most robots do a specific job, and they do not always look like humans.

In fiction, however, robots usually look like people, and seem to have a life of their own.

People have been interested in building machines to do work for us for a long time.

Leonardo da Vinci designed a man-shaped machine to look like a knight in 1464.

In 1920, Karel Čapek wrote a story about them, and he used a word from Czech that is connected with 'work': robot.

The next year, it started work in a factory in New Jersey, lifting and stacking pieces of metal that were too hot for people to touch.

If someone makes a mistake, the robot is damaged or destroyed, which is better than a person being killed.

There are also robots that help at home, to vacuum or run a lawn mower, for example.

A few robots do surgery in places inside the body where a human hand is too big.

Because it takes a long time to send a radio signal from Earth to another planet, the robots do much of their work alone, without commands from Earth.

People still think of robots as having a shape like a person-two legs, two arms, and a head.

Yogurt also spelled yoghurt, yogourt or yoghourt, is a worldwide popular food.

The most recent etymology of the word yogurt certainly comes from the Turkish language (meaning to knead or mix with a utensil).

Legend tells that yogurt was discovered because a shepherd, forgetting some milk in one of these skins for a while, when he finally remembered it, found it transformed : into something denser and tastier.

Yogurt was brought to the US in the early 1900s and steadily increased in popularity as a health food item over the next several decades.

In 1919, Carasso, who was from Ottoman Salonika, started a small yogurt business in Barcelona, Spain, and named the business Danone ("little Daniel") after his son.

It makes a yogurt that's thicker, creamier and tangier than regular yogurt.

Frozen yogurt is a frozen dessert made with yogurt and sometimes other dairy and non-dairy products.

A salad of yogurt, cucumbers, and spices is served in India (raita) and several Middle Eastern countries (jajik) and Greece (tzatziki or tarator).