The ancient Greeks are renowned today for their advanced thinking. We’ve all heard of Aristotle and Socrates, and the writings of the Greeks have influenced modern thought in almost every way possible—from how we write fiction to how we understand the world around us. They were hundreds of years ahead of their time in mathematics and politics.

But perhaps their greatest achievements were in the area of mechanics. From the first computers to the first clock tower, the ancient Greeks built some truly amazing machines, some of which wouldn’t exist again for another 1,000 years. Some were practical, while others were simply for fun or to aid in scientific demonstrations.

Let’s take a look at ten of the greatest examples of ancient Greek mechanical engineering.

10 The Antikythera Mechanism

The Antikythera Mechanism is an analog computer that was discovered in an ancient Greek shipwreck in 1901. Assembled sometime between 205 BC and 60 BC, it was designed to measure the movements of the heavens. It had a clock-like face with seven hands that tracked the movements of the planets and the Moon and also had mechanisms for tracking the phase of the Moon, the calendar, and the lunar and solar eclipses.^[1]

It turned our understanding of Greek engineering upside down when it was first properly identified in 2006, with its extremely precise and interlocking gear systems. It demonstrated that the ancient Greeks were capable of a level of precision engineering that was previously thought impossible. And it might not even be the oldest version of this machine—Cicero, the Roman writer, described Archimedes building a similar device in the third century BC.

Unfortunately, only fragments of the device were recovered, so key features of it—such as how the device drove the planetary pointers, which no doubt must have been very complex, considering how the planets’ paths through the sky vary—are still not understood.

9 The Diolkos

The ancient Greek city of Corinth was a center of maritime trade in the ancient world, and it saw hundreds of vessels in its port at any one time. It was also close to the narrowest bit of land in the Greek peninsula, which would have saved ships days of travel if they could take a shortcut through it.^[2]

Hence the construction of the Diolkos sometime around the fifth century BC, a special kind of portage road that allowed ships to be hauled overland, avoiding the long trip around the Peloponnese. In the past, it used to be thought of as a way of transporting cargo ships quickly from the Aegean sea to the Ionian and vice versa, but it is now widely believed that cargo ships would have been too large to use the Diolkos, which would explain the construction of the Corinthian Canal in AD 67.

Nonetheless, it probably played an important role as a cheap method of moving small ships and military vessels between the seas in a hurry and was probably used by wealthy Greeks with their own personal boats as a fast form of transport.

8 Philo’s Gimbal

The gimbal serves many purposes today—not least in the world of television, where its role in stabilizing handheld cameras keeps filming nice and smooth—but the very first gimbal was invented by Philo of Byzantium sometime around 200 BC, when he used it to make an inkwell that would never spill.^[3]

The ink was mounted in a container at the center of the device, surrounded by concentric circles that always held it upright, even when turned. The frame around the outside featured numerous holes to dip the pen into—so the writer could turn the inkwell over, or accidentally knock it, and still continue writing without spilling any ink.

In later eras, the gimbal became absolutely crucial for navigation, holding a compass steady on a rocking ship so that the compass point always accurately pointed north.

7 The Kleroterion

The ancient Greek version of democracy may look primitive to our modern eyes, but they used a very innovative device to ensure that juries were always made up of people who couldn’t be bribed or otherwise influenced: a randomization machine.^[4]

A kleroterion was a kind of slot machine with some funnels, a crank, a hole, and 500 small slits. When a jury was assembled for a trial, each juror brought with them a form of ID—a thin piece of bronze or wood with their identifier on it, called a pinakion. These were all inserted into the slits. An officer tipped a handful of balls into the funnels at the top of the device—some black, some white. He then pulled the crank, causing one ball to come out. If the ball was black, the row of pinakia were removed, and those jurors wouldn’t serve that day. If the ball was white, those jurors were eligible for duty. The official pulled the crank for each row of pinakia until they’d all been accepted or rejected. There was no way to predict which ball would come out for which row, thereby ensuring that no one could have guessed before the trial who would be on the jury, preventing them from influencing their decisions.

6 The Aeolipile

The aeolipile was, as far as we know, the world’s first steam engine—invented in the first century AD, roughly a millennium and a half before they became a common means of generating electricity.

It was invented by Heron of Alexandria. However, it certainly wasn’t intended to be an engine, and Heron never saw it as such. Rather, he used it as a simple device to demonstrate some of the principles of pneumatics, no doubt to aid in lessons or to attract the attention of curious visitors.

The engine itself was a hollow sphere mounted on two tubes it could rotate around. The tubes provided steam from a hot cauldron below the machine. As the steam filled the sphere, it escaped through another tube (sometimes two) that jutted out of the sphere. These tubes were angled sideways, so the force of the steam coming out caused the sphere to rotate.^[5]

5 The Crane (And Archimedes’s Claw)

The Greeks invented the crane around the year 500 BC, a simple wooden hoist-and-pulley system that made erecting tall, sturdy buildings much more practical. (The technology was later improved by the Romans, who spread it across most of Europe.) However, the Greeks could easily build advanced cranes of their own, as is proven by Archimedes’s Claw.

Archimedes’s Claw (depicted rather fancifully in the painting above) was a machine built in Syracuse by Archimedes sometime before the Roman siege of the city in 214 BC.^[6] According to ancient accounts, the claw was a kind of crane that could either push or lift ships out of the sea, toppling them and causing them to sink. It was mounted close to the city’s sea walls, preventing Roman ships from coming close to the city.

According to Plutarch, the claw terrified the besieging Romans, who began to feel like they were fighting against the gods, and many soldiers were frightened by the sight of any wooden frame above the city walls in case it was another one of Archimedes’s contraptions. They gave up any hope of taking the city by sea, resigning themselves to a long land-based siege.

4 The Tower Of The Winds

Built in roughly 50 BC, the Tower of the Winds in Athens is widely considered to be the world’s first meteorological station as well as the world’s first clock tower.^[7] In ancient times, it was topped by a weather vane that indicated the direction of the wind. The tower has eight walls, each facing one of the compass points, and features a massive sundial which could be used to track the time of day. It had a water clock inside, which kept track of time overnight or on cloudy days.

Its considerable height and its dominant position on the Roman Agora in the city both seem to suggest it was intended to function in much the same way as a clock tower would today, and the ancient Greeks themselves knew it as the Horologion: “Timepiece.”

The building still stands today and is remarkably intact, mostly due to restoration work. It has inspired many architects over the course of history, and smaller replicas are scattered across Europe.

3 The Showers Of Pergamum

The ancient Greeks are famous today for their love of athletics, seen most prominently in the Olympics and their modern-day revival. What they are less known for, however, are the facilities ancient athletes sometimes enjoyed.

A system of showers was excavated at a gymnasium (built in the early second century BC) in Pergamum, which was one of the greatest ancient Greek cities.^[8] Now located in modern-day Turkey, it also hosted the greatest library outside of Alexandria, and its rulers consciously invested in the public works of their city to increase its prestige.

As such, it is unlikely that these shower systems were common across the Greek world, but they certainly existed. The Pergamum showers had seven bathing units, into which water flowed through an overhead mains system onto the bathers.

A shower system is also depicted on a vase from the fourth century BC, so by the time Pergamum’s showers were built, the ancient Greeks had been using showers for over a century. The image on the vase even depicts separate cubicles and rails for users to hang their belongings on.

2 Archimedes’s Screw

Archimedes is commonly considered to be the inventor of the Archimedes screw, a machine used even today for transporting water to a higher level with relatively little energy.^[9] The ancient Greek version was powered by treading, where human workers or slaves would use their weight to power the machine—the crank-operated version was invented in medieval Germany.

It is argued that Archimedes’s screw wasn’t the first such device to exist in the ancient world. The Hanging Gardens of Babylon, built circa 600 BC, were said to have been watered by screws. However, the earliest source who says this is Strabo, writing almost 600 years later—and long after the invention of Archimedes’s screw, so he may have been using his knowledge of the technology around him to theorize how the Hanging Gardens might have worked. The site of the Gardens is still a mystery even today, so there is no way of knowing for sure.

Even so, the machine didn’t become commonly used until Archimedes’s lifetime, when it started to be employed by the Greeks and, later, the Romans for irrigation or for draining ships.

1 Heron’s Fountain

Another device designed by Heron of Alexandria to demonstrate physics, Heron’s fountain used the principles of hydraulics and pneumatics to create a fountain that spurts water without power.^[10] It is used even today in physics classrooms to aid teaching.

Heron’s fountain is made of three components: an open bowl, an airtight water-filled container, and an airtight air-filled container, each stacked above the other. A pipe leads from the bottom of the bowl to the air container, another leads from the air container into the water container, and another leaves the water container and is positioned above the bowl. When water is poured into the bowl, it falls down the pipe into the air container. Pressure in the air container then pushes air into the water container, which pushes water up the pipe and back into the bowl, where it creates more pressure in the air container.

While not physically practical, like Heron’s other devices it shows the incredible grasp the ancient Greeks had on physics over 1,000 years before the Renaissance and the scientific revolution. The device is not technically a perpetual motion machine, though it can run for a very long time if constructed to the right specifications. Resetting it is as simple as draining the water from the air container back into the water container.

“GMO” foods may seem like a modern phenomenon, made possible only because of well-funded labs and genome analysis. What most consumers don’t realize is that most of humanity’s crops were already genetically modified thousands of years ago. In almost all cases, our favorite fruits and vegetables were engineered to be fundamentally different from their wild ancestors.

SEE ALSO: 10 Foods That Have Been Genetically Modified Beyond Recognition

10Almonds

The almonds we eat today are a domesticated variety derived from several species of wild almonds, all of which are bitter, spiny, and contain deadly amounts of cyanide. In the wild, almond trees produce a sugary compound and an enzyme that inevitably combine into cyanide when the edible parts of the plant are chewed up.

The identities of the specific strains used to create modern almonds are unknown. However, it is clear that humans selected and interbred the sweetest varieties of bitter almonds until the nuts were edible. This is quite a feat, considering that eating a dozen or so of the toxic kind would kill whoever had the task of testing out the newest crops. Luckily, the mutation that halts cyanide production is a dominant one, and almonds quickly became a popular treat.

9Watermelon

The modern watermelon is one of the most extensively modified fruits in human history. Sub-Saharan Africans created the first domesticated varieties, which came in larger sizes and different colors. After the fruit’s introduction to Asia and Europe, it became substantially fleshier, sweeter, and larger.

Compared to the original watermelons found in the wild, which consisted mostly of seeds and weighed a mere 80 grams, modern ones are 91.5 percent water and weigh 2–8 kilograms (4–18 lb). Through several thousand years of artificial selection, the average volume of the watermelon has undergone a 1,680-fold increase.

The fruit’s appetizing red color is relatively new as well. It’s caused by the overproduction of the compound lycopene, a trait intentionally bred into watermelons by humans. Analysis of the watermelon genome also reveals that domestication has reduced the plant’s natural resistance to diseases. Today we are still modifying them, mostly to restore and then improve these natural immune functions.

8Broccoli, Cauliflower, And Other Cultivars

Broccoli doesn’t exist in the wild. Neither does cauliflower, cabbage, Brussels sprouts, collards, or kale. All of these plants are the result of human cultivation, and they’re all the same species. These crops are artificially bred variations of the mustard plant Brassica oleracea. In its wild form, this plant produces several large leaves, as well as bunches of small yellow flowers. Different subspecies such as broccoli or cauliflower are created by modifying the expression of genes controlling the way the plant grows.

In broccoli, the flower clusters that once bloomed in the wild have been expanded into a cloud-like structure of many closed buds. In cauliflower, the flowery white head consists of mutant, undifferentiated cells that almost always remain sterile. One of the most striking examples of unique structures in this species is Romanesco broccoli: Its single modified bud is made up of smaller and smaller buds, forming a distinct logarithmic spiral pattern.

7Bananas

It seems like bananas were practically designed for us primates: They’re soft, seedless, tailor-made for the grip of our hand, and even come with a tab for easy opening. In reality, wild-type bananas are mostly inedible, and the plantains we eat today are completely different after genetic modifications. Wild-type bananas, which are tiny, tough, and filled with pit-like seeds, sometimes produce mutant variants without seeds.

Humans have been playing with this specific mutation for at least 6,500 years to produce all the varieties of seedless bananas available today. The banana’s design might even be too popular at this point; today’s mass-produced bananas are considered too genetically uniform, making them susceptible to diseases. Looks like we have some more work to do.

6Corn

The wild ancestor of modern-day corn is a grass known as Zea or teosintes. Ancient Meso-Americans began selectively breeding this species as far back as 10,000 years ago. Gradually, they produced a plant unlike any other found in the world.

These soft, starchy plants appeared suddenly and mysteriously in archaeological records; the secrets of its development were only discovered recently through molecular and genetic analysis. The most important change suppressed branching of stalks. As a result, the plant produces fewer ears, but these ears are enormous, with long rows of kernels.

Stranger still, very little was changed in the plant’s genome during its domestication. The difference between the ancient and modern version amounts to a mere five or so genes.

5Pumpkins

Pumpkins, squash, and all other gourds are cultivated forms of tiny ancient plants. They all hail from the genus Cucurbita, which has become one of the most important plant groups for human consumption. Like corn, it was domesticated in the Americas at least 7,000 years ago. Ancient varieties were small, with extremely bitter flesh and few seeds. At some point, they were bred to produce more seeds. Later in history, there was more focus on creating different shapes, sizes, and types of flesh.

Pumpkins are native to North America and have no known wild variety that still exists. Long before their domestication, specifically around 14,000 years ago when humans first arrived to the continent, the early varieties of pumpkin nearly went extinct. These plants were once rich in cucurbitacins, one of the bitterest compound groups known to science. It appears that humans first used these gourds as containers and later began to use them as food sources.

4Strawberries

Sweet, juicy strawberries are a very recent creation. Tiny ancestors were sometimes collected throughout the British Isles during the ice age, but the strawberry we enjoy today was cultivated as recently as the 1750s.

Mathematician and engineer Amedee-Francois Frezier brought a larger variety of wild strawberry while mapping out Chile for Louis XIV. After decades of trial and error, garden strawberries were created in France by crossing this plant with wild berries from America.

In 1759, pine strawberries became commercially significant. Finally, the huge, “modern” type of strawberry appeared by accident during hybridization experiments in 1806.

3Avocados

The original, primitive forms of the avocado are better described as “avocado-like fruits.” Unlike the fleshy, leathery-skinned kind we have today, most wild avocados are encased in hard shells. Uncultivated avocados are tiny enough to fit into the center of your palm, growing to about two or three inches in diameter. The wild-type flesh is gritty instead of creamy, and there is very little of it because the pit takes up almost all of the space inside the fruit. In 1927, agricultural explorer and researcher Wilson Popenoe commented that “the flavor is strong, not pleasant, and the fruit is scarcely considered eatable.”

For most of its time as a domesticated crop, the avocado remained unchanged due to its status as a sacred plant in tropical Mesoamerica. Large gardens—sometimes even entire forests—of avocado trees were grown and carefully maintained over ancestral burial grounds.

2Coffee

The coffee bean is another recently discovered and cultivated plant. It makes this list not because it has been fundamentally changed from its wild form but because there are so many varieties created solely to satisfy our cravings for novel tastes.

First cultivated in India during the 1600s, this African plant now comes in several dozen varieties and cultivars and continues to evolve with humans. Not even looking at varieties within each species, there are about 10 distinct species of coffee plant at present. Need your coffee less bitter? More bitter? Slightly buttery? Caffeine-free? Sourced from frost-resistant, self-fertilizing genetic stock that is purposely grown in civet feces? There’s a variety of bean for that. All modern, genetically modified varieties descend from ancient Arabica beans, which in itself is a hybrid of mysterious origin.

1Wheat

The cultivation of wheat began long before recorded history. In fact, the start of human civilization itself began when primitive people transitioned from the nomadic, hunter-gatherer lifestyle to an agriculturally based one. Wheat was one of the first and most important crops grown during this time, and the first human settlements gathered around areas where this food could be grown.

At first, prehistoric man was content to gather stray seeds of wild grasses. But soon (before people started making pottery, even) they had started to gather plants from areas with more seeds and replant them back home. Eventual changes in seed size and nutritional value were achieved, but the most important trait we managed coax out of their genomes was something called “indehiscence.” Normally, pods containing the edible parts of these plants shattered, so seeds could spread across the wind and ground. Thanks to prehistoric artificial selection, this trait was eliminated and our ancestors could harvest the plant itself, with all its seeds intact.

The first genetically engineered organism was created in 1973. That was just bacteria and not something that most everyday people would be excited about, but it set a precedent. Genetic engineering has grown in leaps and bounds since then, usually for the benefit of mankind. Scientific illiteracy and propaganda have made people suspicious of GMOs and now companies proudly proclaim their products aren’t GMO even when a third of all Nobel science laureates have pleaded with governments to make use of them because GMO crops could save literally millions of lives every year. 

So what’s holding us back? It could be these somewhat more bizarre uses of genetic engineering technology. 

10. Bitcoin Mice

When we say plans for genetic engineering, keep in mind that doesn’t necessarily mean execution. No one has done what we’re about to describe yet. They just had the idea. And what idea is that? To encode Bitcoin into the DNA of a mouse. 

The group behind the plan is actually just two guys and they don’t have funding, so don’t expect to see any high value crypto mice on the market anytime soon. The plan, however, is interesting, if nothing else.

The idea here is to store Bitcoin in a cold wallet like anyone might with their cryptocurrency. Then a digital key can be generated, which is also standard. However, things take a left turn at this point. The group’s plan would be to enlist the aid of a genetics firm to translate that key into a genetic ATGC sequence that can be written on DNA. That can then be inserted into a mouse so that a baby mouse can be born with the key encoded in its DNA. The genetics of the mouse will open the wallet and give access to the cryptocurrency therein. 

According to BitMouseDAO, the group that conjured up the idea, the mouse wouldn’t be harmed. And the whole idea is more of an art project than a way to manipulate currency or how it’s used. But for added value, an image of the mouse as an NFT could also be included. 

9. Muscle Dogs

Most genetic engineering is done in a fairly subdued way. One of the most famous cases involved making a strain of rice that was golden yellow and packed with vitamin A that could have saved millions of lives. By and large, yellow rice doesn’t look all that crazy though, and so the rice isn’t particularly shocking in terms of appearances. For that kind of genetic engineering, you need to look at Chinese muscle dogs. 

Researchers edited out a certain gene in the dogs so that they’d develop to be more muscular. In fact, they have twice the muscle mass of normal dogs. And while that sounds like some real mad scientist stuff, it’s arguably for a beneficial purpose.

Dog anatomy and human anatomy are not all that dissimilar in some regards. Researchers were looking into how to prevent human diseases like muscular dystrophy or Parkinson’s, the kinds of conditions that lead to the wasting away of muscle. That said, the possibility of breeding dogs specifically with this mutation also exists which could make them more powerful hunters or runners. And because the mutation works the same in humans, the specific creation of more powerful human athletes could potentially also be a result. 

8. Radiation Cats

The world at large is against genetically modifying things as simple as fruits and vegetables, so you can imagine the uproar if someone started genetically modifying cars, the beloved spokes animals of the internet itself. The idea has been proposed, however, and in the most sci-fi way imaginable.

One of the biggest drawbacks to our current use of nuclear power is the waste it produces. Nuclear waste is very radioactive and dangerous and is going to remain that way for generations. The people who have to deal with these problems have pondered what we can do to save not just people today from radiation, but future people.

The possibility exists that in 10,000 years or so, any language spoken today will be lost. Any knowledge of our nuclear waste storage facilities could be equally lost. How do you warn the people of tomorrow? Radiation cats.

The idea was proposed to create genetically modified cats that would change color when exposed to radiation. That way, in the future, our ancestors will be able to see a visual sign of danger. Presumably the story of what a radiation cat was would somehow be passed down generationally to make the phenomenon something more than a cool trick. 

7. Anti-Cancer Beer

Have you ever heard that drinking red wine can be good for you? This benefit was attributed to a compound found in red grape skins called resveratrol. Resveratrol was shown to be an antioxidant in lab conditions. However, its link to cancer prevention in humans was never really established. That didn’t stop a lot of media stories about the potential after the lab link was established. Enough that some people wanted to look into genetically engineering beer to also have resveratrol in it. 

A team from Rice University was cooking up a plan to use resveratrol enriched yeast to brew beer back in 2008. They even entered the beer in the International Genetically Engineered Machine competition that year and won the gold medal. Most of the students involved in the project weren’t even old enough to legally drink the beer that they were creating. 

6. Dinosaur Snout Chickens

When was the first time you heard that chickens are actually dinosaurs? This was a popular headline back in 2015. But the real link started making the media rounds back in 2007. So we’ve all had a good bit of time to adjust to the idea that chickens and dinosaurs are pretty closely related. 

Science took things one step further in 2017 when they decided to see if they could turn a chicken back into a dinosaur. A little genetic engineering was needed to determine how a dinosaur face evolved into a beak, and then efforts were put into switching those genes off again so that a beak could turn back into a dinosaur snout. Research had been going for some years towards this goal, and a team at Yale had altered chicken embryos to basically reverse engineer a dinosaur face. The chickens were never taken beyond the embryonic state, so no dino-chickens were actually running around. 

The researchers have gained insight into the evolutionary process, as was the goal. Conceivably, however, this research could also be used towards the goal of engineering future dinosaur-like animals, although such research would widely be considered unethical. 

5. Daddy Short Legs

There are over 45,000 species of spiders in the world and most of us can only recognize a few by name. Of those, the Daddy Long Legs has to be one of the most famous. But odds are no one would recognize the genetically altered version made at the University of Wisconsin-Madison.

This new version was missing the hallmark of the species and instead had little stub legs, so they called it a Daddy Short Legs. The team were able to identify and switch off a pair of genes related to leg development in the spiders. This helped gain insight into the evolutionary process that gave the spiders long legs in the first place. Now if you want to know why that’s important, well, that’s just a science thing. Scientists like to know why things happen the way they do. 

4. Vaccine Bananas 

These last few years have really brought vaccines to the forefront of people’s mind around the world. But have you ever wondered why vaccines are almost always distributed the same way? Sure, going to a pharmacy or hospital and getting an injection makes sense, but what if there was another way? For instance, what if we could eat a vaccine? What if we could genetically modify a banana to provide vaccination against a disease?

Anti-vaxxers would no doubt flip their lids at the concept, but vaccine bananas were actively pursued for a time. The idea stumbled, however, and maybe for reasons that aren’t readily apparent. 

One of the big drawbacks was unreliability. Delivering specific doses and the stability of the antigens in a food suffered too many variables. Just look at the bananas in the store next time you go. Some are giant and some are small. Is the dose the same if they’re delivering vaccines? What if you eat a whole bunch, is it safe?

Other issues included immune tolerance, government regulations and good ol’ social resistance since people are already predisposed to mistrust GMOs.Still, the idea of using things like tomatoes to vaccinate against hepatitis B is still floated from time to time. 

3. Safer Pig Poop 

How worried are you about the chemical composition of pig poop? Canada struggled with this very issue, and in 2010, scientists there did something about it. The Enviropig was introduced to be a more environmentally friendly porker.

The genetically modified pigs were designed to produce less phosphorus when they pooped. The problem here is one most of us would never realize. All animals need phosphorus. It helps build cells and many other functions of life. Pigs get their phosphorus in feed but cannot digest phytate, a molecule made up chiefly of phosphorus. Farmers supplement an enzyme called phytase in their diets, which helps them digest it. But it’s inefficient and a lot of phosphorus gets excreted by pigs. 

Phosphorus from pig feces builds up in the water supply, feeding algae and creating biological dead zones with no oxygen. So the Enviropig was modified to not need phytase and excrete 40% less phosphorus as a result. The end result is a pig that helps the environmentally friendly and saves money on feed supplements. 

2. Spider Silk Goats 

Spider silk is stronger than steel, though in practical terms there are a lot of limitations to what that statement means. Still, being able to manufacture spider silk would surely have practical uses, right? That’s what researchers thought when they genetically engineered goats to produce it. The silk was produced by incorporating silk-spinning genes into the goats so that silk could be harvested along with the goat’s milk.

There are potentially dozens of applications for large-scale production from medical to textile and military. But spiders are very hard to farm and they tend to kill each other. Goats are much easier.  Nine years after Canadian scientists made the first two spider goats, and another facility was overseeing 20 of them. It’s still small scale, but it hasn’t gone away. 

1. Cyborg Dragonfly

If you want to go all out with genetic engineering, why not throw cybernetics into the mix as well? That’s how you end up with a cyborg dragonfly drone that mixes a genetically engineered insect with machinery all in one place. 

Real life drones are bulky, relatively speaking, when compared to insects. Scientists have tried to understand how something as small as an insect can have the energy to zip around at high speeds in such a small package when we can’t do the same with robotics. Tiny batteries are terribly inefficient. 

The solution seems to be making an insect a robot. A dragonfly was modified with neurons in its spine to make it steerable. With a tiny computer backpack to gather data and also charge the tech with a solar panel, the dragonfly can be piloted by remote control as light sensors are used to send signals to its brain. The result is a tiny, living spy that could get into places few humans or drones could. Does it open the possibility of up-scaling the tech and controlling more complex animals? Maybe so.

We hear a lot about scientists and their fancy ideas, though it’s actually engineers who put those ideas into practice for real world applications. At its most basic, engineering is the science of building things – like machines – to apply theoretical scientific principles to real life situations. The theoretical system of measuring time, as one example, no matter how sophisticated or accurate, is useless in the absence of a working clock. 

Of course, the greatest engineering marvels of today are a bit more advanced and complex than clocks. In the past few years, engineers from around the world have built many things that were once thought impossible, or at least well in the realm of the distant future. 

10. Parker Solar Probe

Despite its seeming proximity to Earth, we know very little about what’s going on with our own Sun, especially on its surface. It seems to be cooler than its atmosphere – or the corona – which is where all the Sun’s heat really comes from. It doesn’t make any sense – it’s like feeling hotter the further away you move from a fire.

That’s only one of the many things we don’t know about the Sun, and until recently, reaching its corona to take measurements was considered an impossible, futuristic task. NASA’s Parker probe broke that barrier on April 28, 2021, when it became the first man-made thing to touch the Sun’s atmosphere. It was Parker’s eighth flyby, and gave us some crucial insights into how solar winds are generated.

The probe is still in orbit around the Sun, and is expected to make another close flyby some time in 2025. 

9. Mind-Controlled Prosthetics

Modern prosthetics are, in themselves, one of the greatest engineering achievements of all time. For most of our history, amputees had to either live without them altogether, or make do with rudimentary, uncomfortable models made out of leather, wood and other basic material. It’s only now that prosthetic limbs have come to look and even almost feel like real limbs. Still, they’re far from being the real thing, as it’s impossible to recreate the neural connection between a living organ and the brain with a machine.

Mind-controlled prosthetics are a new class of prosthetics that could be, well, controlled by the mind, though they’re still in their early stages. One prototype developed by Swedish scientists connects with the patient’s nerves, muscles and skeleton, allowing them much more control over their fingers and wrists than previously thought possible. Currently, it’s in active use by three Swedish patients and doesn’t require any additional care or supervision by a medical professional, unlike most prosthetics we have right now. 

According to the researchers, the technology could be available for patients outside Sweden within this year. While it’s still not the same as a real limb, it provides us a glimpse into what the future of prosthetics might look like. 

8. Burj Khalifa

Sometimes, engineering is about pushing the frontiers of not just engineering, but also other areas of study, which advances our overall understanding of the world. However, it doesn’t have to be, as good engineering could also just be about building a really tall and good-looking building. 

Currently, the tallest building in the world is the Burj Khalifa, standing at a height of 2,717 feet. It is extraordinarily tall – about 500 feet taller than the next competitor – making you wonder how it’s even standing upright. 

Built by a Chicago firm called Skidmore, Owings & Merrill, the Burj Khalifa took over six years to complete, and was first opened to the public in January 2010. Its Y-shaped base is designed in the shape of the local Hymenocallis flower, though it also works to absorb heavy winds. 

There are a total of 163 floors, each built in a different shape to reduce the effect of the winds as you go higher. Apart from residences and shopping districts of its own, the building houses multiple observation decks, including the two-story At The Top on its 124th and 125th floors, as well as luxury restaurants, corporate spaces and a three-story lounge.

7. Floating Cities

Rising sea levels pose a huge challenge to the Netherlands, as over one-third of the country already lies below the current sea level. To counter its worst effects, a Dutch architecture firm has come up with Schoonschip: a conceptual residential project in Amsterdam that combines architecture and sustainable design to come up with an entirely new style of living.  

The entire neighborhood is built on floating arks in the Johan van Hasseltkade canal, and currently houses around 100 people in 46 residential properties. It’s an alternative to all the land-based models we currently have, though by no means a novel one – many native communities around the world still live on floating settlements. 

Schoonschip is more than just a fancy houseboat, however. Every part of its design is meant to be sustainable and reusable, with all the decision-making in the hands of the residents. For one example, all the energy generated within the complex is done through renewables, and traded among the residents through a blockchain. 

6. Nanobots

Nanobots – or microscopic robots that can carry out any function you want – have shown up in science fiction in various forms. Until recently, though, it was next to impossible to actually make something like that. Thanks to advancements in theoretical sciences and nanotechnology in the past few years, we already have the first prototypes of what future nanobots might look like.

As you’d expect, these tiny machines have quite a few use cases in medicine. A group of researchers from the University of California San Diego have developed nanobots that could clear toxins and pathogens from the bloodstream. Another one from the University of New South Wales figured out a way to train these bots to repair themselves with DNA, blurring the line between living organs and man-made robots. 

5. Invisibility Cloak

When we think of an invisibility cloak, we think of a hypothetical material that could render us truly invisible. (Or, just as likely, we think of Harry Potter. Naturally.) Many prototypes have been tried, though almost all of them rely on either cheap tricks of the light, or were too bulky to be of any real use.  

The only material that comes close to real-life invisibility is Quantum Stealth, developed by a Canadian corporation known as Hyperstealth Biotechnology Corp. It’s a passive, everlasting effect, too, instead of using some kind of power generation or illusion to make it seem like you’re invisible. 

From the videos released by the firm, it’s clear that the material is designed to successfully bend light around any kind of subject – including large vehicles. We don’t know exactly how it works, though, as that information is still classified due to its possible military applications in the near future. 

4. Mind Reading

It’s one thing to scan the brain for electrical and neurological signals, and another to actually read and record what’s going on inside our heads like we perceive it. The former could be achieved by many machines found at your local hospital. The latter, though, is a barrier we never thought machines could cross, as consciousness is much more than just waves of electricity passing through the brain.

As it turns out, it’s really not. We already have machines that can identify a song playing inside your head with the help of an AI, as it learns the connections between brain signals and specific sections of music with the help of machine learning. Or even recreate the image you’re thinking about, albeit to a lower degree of accuracy than the songs (though still high enough to be creepy). 

3. 4D Objects

We’ve all heard of 3D printing, which involves basically making anything you want, as long as you have basic ingredients and its blueprint. It’s a revolutionary concept in itself, and has been successfully used in a wide variety of applications. Some day, it might even allow us to print living organs, or even living beings.

4D just builds upon that concept, except the printed things are now able to react to different conditions in real time. Quite a few 4D materials – also called smart materials – have been developed in the past few years, including self-healing plastics that can eliminate wear and tear and make plastic items infinitely reusable, fabrics that can rearrange their molecular arrangement to changes in the weather, and shoes that can fully repair themselves with an additional gel, among others. 

2. Artificial Intelligence

Artificial Intelligence isn’t an entirely new concept. First coined in 1956, the term has come to refer to any type of machine or algorithm that can mimic human intelligence. Early experiments involved rudimentary, slightly-intelligent automatons like the John Hopkins Beast, though the technology was still held back by the lack of processing power and other computational limitations to have a real impact.

Fast forward to today, and Artificial Intelligence is easily one of the most groundbreaking developments of the past few years, thanks to the proliferation of powerful graphical processing units (or GPUs), machine learning and the emergence of ‘Big Data’. Neural networks, as one example of its many implementations, are able to think and compute exactly like the human brain, which includes the ability to learn from their mistakes. 

AI has revolutionized many fields, including medicine, logistics, space research, marketing, and pretty much anything that involves parsing a lot of data. That also, unfortunately, includes warfare, as militaries around the world develop their own AI-based technologies to be used in the automated battlefields of the future. 

1. Large Hadron Collider

The Large Hadron Collider is perhaps one of the most important engineering works ever undertaken. It’s a 17-mile-long underground tunnel located on the border between France and Switzerland, with its primary purpose of smashing different kinds of particles together at really high speeds to understand the true nature of reality.

First operated in 2008, it was a massive project, not just in scale but also the scope of its purpose. Organized by CERN – or the European Organization for Nuclear Research – it was designed and built by over 10,000 scientists, engineers and other professionals from around the world. At over $10 billion, it’s easily the most expensive machine ever built, and we can now tell that it was well worth it. Since its first run, the LHC has made many important, fundamental contributions to theoretical physics, including the highly-publicized discovery of the Higgs boson back in 2012.

Helicopters are incredible flying machines that test the limits of design and mechanics by their very existence. But which helicopters truly test the limits of aviation? What about helicopters that fly upside down? A helicopter that lifts far more than its own weight? Or a rotary machine that rivaled jet airliners in size? These record setting rotorcraft will give your head a spin!

10. Messerschmitt-Bölkow-Blohm Bo 105: The Aerobat

The iconic steed of Red Bull pilots Chuck Aaron and successor Aaron Fitzgerald, the Messerschmitt-Bölkow-Blohm Bo 105 was a revolutionary contribution to rotary aviation from Germany that stands out as the world’s first aerobatic helicopter. The machine was also new as the first light helicopter to fly with twin engines. That’s right, this super powerful helicopter can do barrel rolls, loops, and fly inverted like the most extreme stunt planes thanks to its incredible design.

Thanks to the capabilities of the Bo 105 as the first ever helicopter to achieve these things, the flight envelope and perceived utility of the helicopter as a machine was revolutionized. The hingeless rotor built from solid titanium is just one great distinguisher of this engineering marvel. The machine can climb at 1,575 feet per minute, and cruise at 150 miles per hour under the power of two 420 standard horsepower Rolls Royce engines. The machines were produced primarily in Germany and Canada, with uses ranging from military to police service as well as in the famed upside down and barrel rolling airshow demos. The helicopter also has been set up for use on aircraft carriers and even fitted out to carry missiles.

9. Mil V-12: The Biggest One

Just how big can a helicopter get? Larger than you imagined, rivaling jet airliners while barely remaining identifiable to the casual eye as a horrifically overgrown helicopter. First flying in 1968, just before the entire project was canceled, the pre-Cold War Soviet Union’s Mil V-12 project was constructed as a transporter with a range of 621 miles and a carrying capacity of one 196 passengers, or a huge load of military cargo. Weighing just over seventy six US tons and designed to fly at 150 miles per hour, the largest helicopter in world history remains unsurpassed. 

The rotors each spanned just 220 feet across. Resembling a giant tube with long airplane-like wings each tipped with monster sized rotor blades, the beastly twin rotor whirlybird dwarfed many planes. In 1971, the Soviet Union demonstrated the monster at the Paris Airshow, astonishing witnesses who saw a helicopter with its rotors and vertical capabilities crossed with the look of an airliner. One of the reasons for exceptional Soviet helicopter development works was the need to move giant missiles to far off missile launch sites away from the eyes of Western spy planes more efficiently. Trains were slow and could not reach many areas but huge helicopters could.

8. Westland Lynx: Fastest Helicopter

The speediest conventional helicopter in the world looks humble, yet it retains its hold on the official world speed record for a helicopter flight since 1986. The Westland Lynx reached an average speed of just over 248 miles per hour over Somerset, England under the supervision of the Fédération Aéronautique Internationale (FAI) who bestowed the speed records on the helicopter for fastest speed reached in a helicopter of the 3,000–4,500 kilogram (6,613.868-99,208 pound) weight class plus the Absolute World Record for Rotorcraft. The achievements may have been decades ago but they have yet to be surpassed, as faster rotorcraft since have not been classified as true helicopters, but instead are hybrid aircraft with forward propulsion such as convertiplanes. 

The record setting Westland Lynx used specialized main blades designed to fight blade stalling behavior of the blades that would be made worse by high speed flight, a design venture brought to action by the British Experimental Rotor Programme. This programme was a joint effort involving Westland cooperating with the UK Ministry of Defense. High speed main blades, water and methanol power boosts to the engine plus reduction in exhaust pipe size were just some of the overhauls that would propel the helicopter to record speed. Furthermore, the tail rotor and fins were revised to better distribute stresses of high speed flight.

7. Kellet-Hughes XH-17: The Weirdest

If a real life transforming machine got stuck between crane and helicopter mode, the Kellet-Hughes XH-17 would be it. This strange work of aeronautical engineering resembled a helicopter that collided with a crane and flew off as one big mess. The huge contraption was equipped with jet engines mounted to the tips of each rotor in a bid to get the huge machine to fly properly. The machine had its origins in a plan to study and test the concepts of rotary winged craft powered by jets on the rotor tips instead of traditional helicopter drive systems. As work progressed, the need for a humongous machine that could lift and transport large cargo items into challenging areas led to a 1949 contract requesting that the testing rig be made into a functional flying crane.

The resulting XH-17 had a rotor diameter of 130 feet, with a maximum payload of just over 10,000 pounds. Two General Electric J35 gas turbines powered the ungainly machine, while parts from a laundry list of assorted planes including a Waco CG-15 glider cockpit, B-25 wheels, and a B-29 fuel tank were used. Yes, flames and deafening noise were included in the kafuffle that marked each undertaking to get this beast airborne. Eventually the project was abandoned on grounds of practicality. 

6. Kaman K-Max K-1200: Strangest Super Achiever

Likely the strangest  way to construct a twin rotor helicopter, the multimillion dollar Kaman K-Max K-1200 is a US-built flying machine with synchropter, or intermeshing rotor design. The intermeshing rotors always seem ready to cut into each other, sharing airspace nanoseconds apart, but never touch. Resembling a dolphin in appearance from the side, the rotors angle and intermesh like two gears that never touch, allowing lifting capacity that far outweighs that expected from a helicopter of its size. The laterally compressed body is narrow, making the helicopter look like a fish from a front view perspective.

With its squished design, there is just room for the pilot. The remarkable achievement of this helicopter that has double the rotor and less body than a normal helicopter is the ability to actually lift a cargo load heavier than the empty weight of the helicopter itself! Weighing just 5,145 pounds, the helicopter can take on an additional 6,855 pounds of weight for a maximum gross weight of 12,000 pounds. Uses of the K-1200 include firefighting, search and rescue and supply delivery. Work on a remotely piloted version also led to the creation of a machine that could enter hazardous situations without putting aviators in danger.

5. Bell AH-1 Cobra: First Dedicated Attack Heli

https://www.youtube.com/watch?v=b4hOeEVzPvc

Making its debut in the air in 1965, the Bell AH-1 Cobra was the first fully purpose built attack helicopter, placing impressive close combat air power in the hands of the US Army.  Fast, muscular and bristling with firepower, the machine still serves the US Marine Corps over half a century later. The helicopter looks fairly conventional but a closer look reveals many details borrowed from fighter jets, right down to the seating layout. The crew of two sat in series in the long but narrow cockpit with a bubble canopy, the co-pilot/gunner in the front and the pilot occupying the elevated rear seat. The helicopter is sleek, attractive and carries heavy firepower in an extremely efficient layout. 

Two short wings protrude from the sides of the fuselage, carrying missiles and minigun pods or cannons under the wings. A total of 3,0000 pounds of weaponry could be carried under the tiny but tough wings. Miniguns, grenade launchers or both were also mounted at the front turret under the nose. Compared to heavy transport helicopters that were the norm prior to the Cobra, the helicopter was a revolutionary step towards maneuverability and capability. Minimalistic skid undercarriage added little weight, leaving more payload capacity for the weapons.

4. Masumi Yanagisawa Engineering System Type GEN H-4: Smallest Helicopter

Looking like a patio chair with a ceiling fan attached, the Masumi Yanagisawa Engineering System Type GEN H-4 Helicopter is to a normal helicopter what a bicycle is to a pickup truck. The Japanese product is a unique flying machine for those brave enough to try it. Created in the 1990s by Gennai Yanigasawa, an electronics company head, the world’s smallest helicopter weighs only 165 pounds, making it the lightest of all helicopters, while its rotor span of 12.8 feet is the least of all. 

The machine may be tiny, but it is high tech. The problem of torque and counter-rotation is solved by the machine being coaxial. Instead of a tail rotor, which is not practical to install due to the lack of any tail boom, the machine has two counter-rotating rotors similar to a beginner’s remote controlled helicopter. The machine is not exactly slow, either. Speeds of 56 miles per hour can be reached and the helicopter can stay airborne for 30 minutes at a time. You might really be able to go somewhere perched on this machine. With the rotor blades spinning, the tripod landing gear, seat and rotor hub creates the look of a tiny UFO with a human rider.

3. Dragonfly DF1: Hydrogen Peroxide-Powered

Seating just one person and looking like a shopping cart and a chair with rotor blades attached, the Dragonfly DF1 is not a normal helicopter. It is powered by rockets, fueled by hydrogen peroxide, attached to the rotor tips. Both rockets blast out with power that equates to just over 100 horsepower per rocket motor. The hydrogen peroxide propulsion systems used to make the main rotors spin are only eight inches in length and weigh one and a half pounds each. Because there is no central motor, torque does not form, eliminating the need for powerful tail rotor action. 

Instead, a basic, low power tail rotor is just used for light steering duties. The power to weight ratio of the Dragonfly DF1 is impressive, given the 204 horsepower total power contrasted with a machine weight of merely 230 pounds. Ricardo Cavalcanti, Chairman Avimech Int’l Aircraft, Inc. is the creator of the machine, a renowned aeronautical engineer and nature enthusiast from Brazil who sees the creation as a more ecofriendly mode of flight. Ricardo’s machine uses a collective pitch control to gain altitude once the hydrogen peroxide rockets have got the blades spinning at 750 revolutions per minute.

2. De Lackner HZ-1 Aerocycle: The Worst Helicopter

Probably the one of the most unsettling idea ever for a helicopter, the De Lackner HZ-1 Aerocycle was a terrifying contraption that saw pilots standing right above rotor blades. Variations of the machine were tested from 1954 to 1956, showing promise only at first.

A twist grip throttle controller managed power, while the machine was supposed to have steer, pitch and yaw control by leaning. This was meant to be so easy that a soldier could fly the machine in a manner similar to riding a bicycle following less than half an hour’s training.  Safety of the machine itself became a glaring issue following crashes. Additionally, upright standing pilots on an Aerocycle would be seemingly easy targets for enemy firepower. The US Army thought there would be an airborne cavalry unit using the machines, but instead the Aerocycle project got scrapped in the end.

Test pilot Captain Selmer Sundby, who spent time in charge of the Aerocycle tests and program development before identifying the machine as being too flawed, ultimately received a Distinguished Flying Cross in 1958 to recognize his service with the project. A single remaining Aerocycle can be seen on display at the US Army Transportation Museum in Fort Eustis, Virginia.

1. VS-300: The First Helicopter

The world’s first legitimately flyable helicopter was the Sikorsky VS-300, the work of rotary winged flight pioneer Igor Sikorsky. On September 14, 1939, the machine first got airborne in Stratford, Connecticut after construction by the United Aircraft Corporation’s Vought-Sikorsky Division. Sikorsky patented the basic design in 1931, with the flights to follow laying the groundwork for the familiar main and tail rotor helicopter ubiquitous in modern times. The machine’s first ventures into the air made use of tethers and it was not until 1940 that unrestricted flight took place. Sikorsky had started his engineering journey by making a windup toy helicopter at age 12.

A current day helicopter pilot would be most concerned by the open cockpit of this machine. The front pod looked something like the cockpit of a World War I biplane fighter, while the main blades swirled above the strapped in pilot. Sikorsky’s pioneering work used drive from a single engine to power both the main blades and anti-torque tail rotor. Not content to be the first normal single rotor helicopter, the VS-300 also got fitted with floats and became the first operational amphibian helicopter, landing and taking off from water with ease. The VS-300 is now an exhibit at the Dearborn, Michigan Henry Ford Museum.