1

Swim fins

Image: NEOM

If you don’t know who invented swim fins, this one might startle you! Before he was flying kites in thunderstorms, Benjamin Franklin was just an 11-year-old boy who loved to swim.

He invented early swim fins, but not the kind we wear on our feet. He designed wooden paddles with thumb holes that could be held in the hands to help propel a swimmer through the water faster. He also tried strapping fins to his feet, but found them less effective and even painful.

2

Popsicles

Image: Jill Wellington

The brand Popsicle tells the legendary story: eleven-year-old Frank Epperson left his soda drink with a stirring stick on the porch overnight. When he returned the next morning, he discovered a brilliant idea— frozen juice on a stick !

Originally named the "Epsicle" (after himself), the invention was patented in the 1920s. His children called them "Pop’s ’sicles," and the name Popsicle stuck.

3

Earmuffs

Image: Ellen Kerbey

Chester Greenwood couldn’t endure Maine winters. At 15 years old, his ears got cold, and he didn’t like the feeling of wool hats on his skin. So he devised a creative solution: his grandmother sewed beaver fur onto a wire headband that he shaped into circular ear loops.

That invention was later patented in the 1870s, becoming the world’s first earmuffs, according to historical records.

4

Toy trucks

Image: Allison Astorga

Using bottle caps, cardboard, and ingenuity, Robert W. Patch created a toy truck that could transform into multiple styles: a dump truck, flatbed, or box truck. And he was only 5 years old.

The modular vehicle concept was so compelling that his father, who happened to be a patent attorney, filed for official recognition. By the time Patch turned six, he had been granted a U.S. patent, making him one of the youngest inventors in history.

5

Superman

Image: Esteban López

Jerry Siegel and artist Joe Shuster were both high school students when they came up with the idea for the Man of Steel in 1933.

They created Superman as the ultimate underdog: an alien orphan who fights for justice. The character was sold to Action Comics in 1938, launching the entire superhero genre.

6

Hot seat

Image: Erik Mclean

A heartbreaking story of a baby dying after being left inside a hot car reached Bishop Curry V when he was 10 years old.

This inspired him to design a device he called Oasis (often referred to in the media as the "Hot Seat"). His invention detects rising temperatures in a car, blows cool air, and alerts parents and emergency services.

7

Water skis

Image: Wyatt Harrom

Ralph Samuelson was a teenager when he had an idea: if people could ski on snow, why not on water? In the early 1920s, he took two pine staves , curved the tips using boiling water , and hit the lake with his brother, towing him behind a motorboat.

After many belly flops, he figured out the proper posture and became the first water skier in history. Although he never patented his creation, he spent years performing and became known as the "Father of Water Skiing."

8

Trampolines

Image: Jasper Garratt

Who knew? George Nissen was just 16 when he devised the bouncy fun. In the early 1930s, he watched circus trapeze artists drop and land into safety nets and realized: what if you could bounce back ?

Working out of his parents’ garage, he stretched canvas across a frame and added springs. Initially, trampolines were used for gymnastics training, but even NASA later adopted them to train astronauts.

9

Makin’ Bacon

Image: Polina Tankilevitch

Michigan native Abbey Fleck did not invent bacon itself, but at 8 years old, she had grown tired of soggy bacon and paper towels. She brainstormed a simpler solution: hang the bacon while it cooked, allowing grease to drip away cleanly.

Together with her dad, she built a prototype in the 1990s and earned a U.S. patent for the microwavable "Makin’ Bacon" tray. It became a retail hit .

10

Wristies

Image: Valeriy Borzov

Cold, wet sleeves are a winter misery. 10-year-old Kathryn Gregory grew frustrated with snow slipping between her mittens and coat sleeves, so she sewed together a pair of warm fleece tubes to cover the gap between glove and sleeve .

She called them Wristies. Her invention was such a hit with friends and family that her Girl Scout troop encouraged her to patent it—and she did! Kathryn became one of the youngest inventors to receive a U.S. patent.

11

Crayon holders

Image: AlexanderStein

Ever struggled to hold a crayon that’s worn down to a stub? So did 11-year-old Cassidy Goldstein. She noticed how frustrating tiny crayons could be, especially for kids just learning to grip.

She came up with a simple solution: a plastic cylinder that could hold broken or short crayons , making them easier to use. Patenting the design earned Cassidy the Youth Inventor of the Year Award.

1

How the White House gained its name

Originally, the building was called the "President’s House." That only changed after the 1814 fire. During the War of 1812, British troops marched into Washington and set many buildings on fire, including the main one.

Walls were scorched, and smoke damage lingered inside and outside the building. When repairs began, painters coated the building white to cover the burn marks . This resulted in the "White House" nickname. Nearly a century later, Theodore Roosevelt made it official.

2

A hidden underground beneath America’s books

Have you ever heard of the Library of Congress's underground tunnels? Most visitors never see them or learn about them. They connect their buildings, allowing staff to transport rare books and documents safely and efficiently. Fragile, valuable materials had better be protected from the weather, the sunlight, and, well, the people!

3

The Golden Gate Bridge wasn’t supposed to stay red

The reddish color of the Golden Gate Bridge (officially named "International Orange") was supposed to be a temporary priming coat to protect the steel.

However, when engineers looked at the bright color peeking through the fog against the stunning blue and green of the San Francisco Bay, they said, "You know what?" It should stay like that. The Navy proposed painting it black and yellow, but it was never done. The stunning color turned it into one of the most iconic buildings in the world.

4

The Empire State Building wanted to welcome airships

Back in 1931, the Empire State Building’s spire was intended as a mooring mast to serve as a docking station for airships. The idea was that passengers should be able to step directly into Manhattan from the sky!

Sure, it was a futuristic plan, but it was eventually dismissed for being wildly dangerous. Passengers would have had to climb out at dizzying heights in strong winds. Not ideal! And certainly not glamorous.

5

The famous ceiling that got the stars wrong

You may have seen images of Grand Central Terminal’s celestial ceiling —or seen it with your own eyes. But there’s a twist: Did you know that the constellations in it are painted backward?

The way they are represented is as if viewed from outside the universe, rather than from Earth. Whether it was a mistake by the artist or it was an intentional reverse on cosmic perspective, the terminal ceiling has looked like this since its opening in 1913.

6

The president who quietly ran a whiskey empire

George Washington is remembered as a general and a president, of course. But he was also a major whiskey producer. Hidden on the grounds of Mount Vernon was a fully functioning distillery, built in the late 1790s.

By the time of Washington’s death, it was producing nearly 11,000 gallons of whiskey a year. That made him one of the largest distillers in the young United States!

7

The iconic façade didn’t exist during the battle

When you think of the Alamo, you surely picture its iconic façade. However, that structure was not part of the original mission!

During the famous 1836 battle, the building looked far simpler, and it lacked its now-famous curved top. That façade was added decades later by the U.S. Army when the structure was used as a supply depot

8

Why visitors can no longer climb to the torch

Did you ever hear some old relative’s anecdote ot climbing all the way to the top of Lady Liberty’s torch? They weren’t lying: Up until 1916, visitors could. However, around that time, some explosions in a nearby munitions depot sent shockwaves through the statue.

The blast damaged the torch and weakened its structure. For safety reasons, access was permanently closed to the public.

9

The concrete that is still hardening today

The Hoover Dam contains so much concrete that it generates heat as it cures. Engineers knew that if poured as one solid mass, it would take more than a century to cool and could crack.

Instead, they built it using interlocking concrete blocks, each cooled with circulating water. Even so, parts of the dam are still slowly curing today.

10

The building that accidentally cooked its neighbors

When the Walt Disney Concert Hall opened in Los Angeles, its gleaming metal exterior stunned visitors. But it also caused an unexpected problem…

The highly reflective steel panels bounced sunlight onto nearby sidewalks and apartments. In some spots, the glare was so intense that it melted materials! As a result, engineers eventually had to dull parts of the surface.

11

The Capitol’s dome isn’t stone

The grand, massive dome atop the U.S. Capitol looks like solid stone, doesn’t it? But, in fact, it is made of cast iron.

In the mid-1800s, stone was considered too heavy and expensive for such an ambitious structure. Cast iron allowed builders to create a taller, more ornate dome that weighs nearly nine million pounds.

1

Preapproved loan

Image: Alexander Mils

Getting a preapproved loan before going to a car dealer is a good way to be sure of how much money one can spend, and it can also reveal any possible credit issues that were not clearly visible.

2

Safety first

Image: Alexandria Gilliott

It goes without saying; safety is always a top priority when buying your new car. When looking at models, go for vehicles with a high safety rating and features like airbags, anti-lock brakes (ABS), and electronic stability control (ESC).

3

Driving habits

Image: why kei

What kind of driving you will do should influence what kind of car you will buy . If you do a lot of city driving with stop-and-go traffic, a fuel-efficient car like a hybrid or electric vehicle could save you significant money on petrol in the long run. Do you need a large vehicle for cargo or passengers, or is a smaller, more agile car for local errands and weekend adventures?

4

Cargo space

Image: Andraz Lazic

And, since we are on the subject of driving habits, cargo space is a crucial feature of whichever car you decide to buy. How much space do you really need? Even if you only need a lot of space a couple of times a year, you will want to have that space when the time comes, so don’t neglect this aspect.

5

Mileage and vehicle age

Image: Wesley Tingey

A simple rule to consider when buying a used car is the average mileage a car is supposed to have, relative to its age. That average is 10,000 to 12,000 miles per year . If the car you're looking at has a lower average annual mileage than that, it could be considered a good mileage.

6

Outside look

Image: Parker Gibbs

A quick inspection on the outside is advisable . Check the body for imperfections like gaps, dents, or discolored paint, inspect the windows for chips and cracks, get under the vehicle, and check the wheel wells and underbody for rust, which could lead to future problems.

7

Test drive

Image: Mira Kireeva

When buying a used car, it is always important to take it for a test drive, even if you don’t have a lot of mechanical knowledge. Pay attention to odd sounds or noises coming from the engine, brakes, or transmission . Test the AC and ensure that it cools quickly. Test the electronics, brake lights, headlights, windshield wipers, and see if the tires are not too worn off. And if you see or hear something that you are not sure about, check with a mechanic before buying.

8

Check for water damage

Image: Caspian Dahlström

Water damage can be a real problem for the interior, the engine, and the electrical system . Pull back the carpets in the footwells and check for moisture or signs of water damage. There are many flood-damaged cars on the market, and most of the time, the signs are concealed.

9

Try all the seats

Image: Wade Lambert

Try out all the seats, even if you probably won’t sit in the rear . Upholstery shouldn’t be ripped or badly worn, particularly in a car with low mileage. Try all the seat adjustments to make sure that they work properly and that you can find a good driving position.

10

Service records and possible crashes

Image: Usman Malik

The past history of a used car can predict future issues . Has it been in a crash? If yes, ask about the extent of the damage and who did the work. Does the car have service records? A good, used car has been well cared for. It should have had maintenance done at the manufacturer-specified intervals.

11

Keep it simple

Image: Erik Mclean

Avoid buying add-ons, extended warranties, or very long car loans , since those usually have higher interest rates and a much higher interest component is paid in the first years than the actual loan.

12

Resale value

Image: Hilbert Hill

Research the resale value of any used car you are interested in buying . The resale value can affect the overall cost of ownership and the financial return on your investment.

By researching its resale value, popularity, demand, and potential for retaining its value over time, you can decide whether to proceed with the purchase.