Saturday, 23, May, 2026

Cowboys In The Wild West Didn’t Wear Cowboy Hats

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Cowboys In The Wild West Didn’t Wear Cowboy Hats
From Nation, For Nation - Pulse of the Nation
Sharks
Sharks

Sharks: Guardians of the Ocean

There is more than meets the eye with these important ocean creatures.
What’s the first thing that comes to mind when you think of a shark? Is it their mouth filled with sharp teeth? A movie that features their enormous size?

The media has long painted sharks in a scary and negative light. While we don’t know if these stereotypes persist due to misinformation, attraction, or otherwise, decades of research have indicated that this level of fear is unnecessary, as sharks do not feed on humans and are actually quite docile unless provoked.

Fin-tastic Friends
Humans are not a part of a shark's natural diet. These animals evolved hundreds of millions of years before humans ever existed. In fact, sharks first appeared in the fossil record about 450 million years ago, which means sharks were roaming our oceans before the first tree was ever on this planet!
Although sharks are known as apex predators, we like to think of them as "Guardians of the Ocean." Sharks help with the process of natural selection by removing weak and sick individuals, being competitors to other large fish such as groupers, and controlling the species diversity by maintaining a healthy gene pool.
Sharks are excellent indicators of ocean health as they control the population of the animals below them in the food chain. When we’re appreciating our oceans, we want to be able to see sharks swimming around. We shouldn’t fear them; we should be scared of a world without them!

We Need Sharks
Research has shown that oceanic shark populations have declined by 71% since 1970. An ocean without sharks would have catastrophic cascading effects; their role as a predator is to dictate their prey’s spatial habitat, which in turn changes the populations, feeding strategies, and diets of other species.
As sharks are removed, the whole food chain destabilizes. The next largest predator, generally groupers, begins to increase in abundance. This in turn doesn’t bode well for the smaller fish that groupers eat, as their populations will begin to deplete. These fish, that often perform reef maintenance duties, suddenly disappear, and we see detrimental impacts on our coral reefs.
As a result, much of the biodiversity of our oceans can be attributed to the vital role sharks play. Removing sharks from the ecosystem creates a trophic cascade impacting every part of the ocean.

Protecting the Ecosystem
An example of a significant shark species is the tiger shark; they have been known to keep green sea turtle populations in check so that seagrass beds are not overgrazed. Without sharks to keep animal populations at bay, sensitive habitats like coral reefs and seagrass beds could be lost forever.
Data from between 2012 and 2019 suggests that around 80 million sharks die every year because of people, and this number is increasing.
This means precious ocean habitats, including coral reefs, seagrass beds, and kelp forests, are severely at risk. Many shark species are in danger due to overfishing, unsustainable fishing practices, and habitat loss.
Protecting sharks through sustainable practices and conservation efforts is crucial not only for their survival but for the health of our oceans and the countless species that depend on them.
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Track Shark Mating
Track Shark Mating

Love Bites: How Scientists Track Shark Mating

Science you can sink your teeth into!
Sharks have a pretty unique way of showing love. Instead of holding hands or going on dates, male sharks bite onto females to stay close while mating!
This might sound a little rough, but it’s a natural process. Scientists will often use these bite marks to figure out when and where sharks are mating-without even seeing them in the act!
In honor of Valentine's Day, let's dive into the deep blue and take a closer look at how sharks show their love.

Shark Wound Detectives
One type of shark, the sand tiger shark, helped scientists create a system to track these love bites over time.
Scientists studied a female shark in an aquarium after she got a deep mating bite. The scientists watched as her wound healed through four stages:
Stage 1: Full-thickness wound: A fresh, deep bite that exposes muscle.
Stage 2: Healing: The wound starts to close up after about two weeks.
Stage 3: Closure: The skin comes together after three to six weeks.
Stage 4: Scar revision: The wound fully heals but leaves a scar, which lasts for 35 weeks or more!

Shark Romance in North Carolina?
Scientists also used this system to study wild sand tiger sharks near shipwrecks in North Carolina!
By looking at digital photos from the Spot A Shark USA database, they found that female sharks had fresh bite wounds in late spring and early summer. That means… North Carolina might be a hot spot for sand tiger shark mating season!
So if you happen to see a shark with scars, it might just be a sign of shark romance in action.

Sea Our Sharks
Looking for more? Check out our story on Rip, the sand tiger shark. In March 2022, Ripley’s Aquariums made history with the birth of Rip, the first successful birth by artificial insemination of a sand tiger shark.
Want to meet some of our fin-credible sharks? Visit Ripley’s Aquarium and get up close with the amazing world of the deep blue!
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From Globe, For Globe - Pulse of the Planet
Invention
Invention
Americans Invented the Automobile, Right?

From 6th-century sailing chariots to Leonardo da Vinci’s self-propelled carriage, think again.
Like the Great American Road Trip, the history of the automobile represents a long and winding journey. Attempting to pinpoint the origins of the concept proves tricky. Maybe that’s why so many have gotten confused about this technology’s birthplace.
While countless folks take for granted that American engineers created the first cars, nothing could be further from the truth. And if you think the idea for self-propelled vehicles dates to the 19th century, you’re in for even more surprises.
Get ready for a wild ride that would leave Mr. Toad queasy as we celebrate the anything-but-straight path to the invention of the automobile.

Leonardo da Vinci’s Foray into Self-Propelled Vehicles
Like so many other inventions that would come to define Western Civilization, Leonardo da Vinci dabbled in the concept for the “automobile” in the early 15th century. He did so in the form of a series of sketches showing a mechanized cart. Again, like most of his designs, the idea remained conceptual.
Da Vinci never attempted to bring the mechanism to life. However, some researchers estimate that the gadget would’ve been capable of moving up to 130 feet (40 meters) before requiring recoiling. They base their speculation on the instructions provided by da Vinci, including the spring diameters.
Far from a car in the modern sense of the word, it still proved a well-designed, self-propelled machine. A team from The Institute and Museum of the History of Science in Florence set out to recreate the invention, following da Vinci’s specs to a tee. They spent three months designing the three-dimensional representation, crafting its many components from five different types of wood (as stipulated by the Italian master himself.) In 2004, they finished the model and tested it.
The result? The self-propelling cart’s coils and wooden mechanics did, indeed, move it forward. Even more impressive, da Vinci’s invention included a steering column and a rank and pinion gear system, both essential to steering assemblies today. Although the “car” design had no seats and limited endurance, da Vinci’s horseless carriage remains downright steampunk.

Sailing Chariots and Steam Engine Carts
When it came to prototypes for the automobile, da Vinci proved among the first to hazard a mechanized, self-propelled vehicle. He had predecessors when it came to making horses redundant, however. The Chinese had sailing carriages for transportation as early as the 6th century AD. The Taoist scholar and crown prince, Xiao Yi, described them in the Book of the Golden Hall Master. Yi noted that Gaocang Wushu invented a “wind-driven carriage” that could carry 30 people at a time. In 610 AD, the Emperor Yang of Sui (r. 604-617) commissioned one according to the Continuation of the New Discourses on the Talk of the Times.
Westerners who visited China in the 16th century, like Gonzales de Mendoza, were amazed by these contraptions. They transported the concept back to Europe, where fantastical experiments soon followed. According to Jacques de Gheyn II, Simon Stevin (a.k.a. Stephinus or Stevinus) of Holland constructed a wind yacht. In 1600, he took Prince Maurice of Orange and 26 guests on a trip from Scheveningen to Petten, passing horses along the way.
Yet, the concept of the self-propelled vehicle evaded Europeans for another century and a half. In 1769, Nicholas-Joseph Cugnot of France constructed a self-propelled vehicle using a steam engine. Designed to move artillery pieces on the battlefield, it operated at two mph (3.2 km/h), stopping every 20 minutes to build more steam.

Internal Combustion Engines
Of course, internal combustion engines distinguish automobiles from their sailing chariots and steam-powered cart ancestors. While you might think of them as a recent invention, guess again. Their history dates to the 17th century.
In 1680, Christiaan Huygens, the famed astronomer, designed an internal combustion engine powered by gunpowder. A dangerous proposition, Huygens was likely wise to leave this concept in his sketchbook.
A century and a half later, in 1826, Samuel Brown of England altered a steam engine to burn gasoline. He attached it to a carriage creating the prototype of a car with an internal combustion engine. His concept never gained widespread interest, though.

Refining the Internal Combustion Engine
By 1858, Jean Joseph-Etienne Lenoir patented another combustion engine fueled by coal gas. His double-acting, electric spark-ignition internal combustion engine proved both a mouthful and a smashing success. After altering the engine to run on petroleum and improving its performance, he attached it to a three-wheeled wagon. It traveled 50 miles.
By 1873, an American finally entered the inventing frenzy. George Brayton designed a two-stroke kerosene engine less likely to blow up in your face. Literally. Three years later, Nikolas August Otto patented the four-stroke engine in Germany, and by 1885, Gottlieb Daimler invented the prototype of the gasoline version we know today.
But the man who entered history books as the father of the modern car is none other than Karl Benz of Germany. In 1886, he patented the three-wheeled Motor Car or “Motorwagen.” Fully equipped with everything from spark plugs to a throttle system, gear shifters to a carburetor, Benz’s invention smacks of an honest-to-goodness ride.

Early Electric Vehicles
A handful of electric vehicles also made their mark on early automotive history. By 1881, the French chemist Camille Faure improved the lead-acid battery design by Plante, rendering it a viable choice for drivers. In 1891, the American designer William Morrison successfully built the first electric vehicle. And in 1899, the Belgian race car driver, Camille Jénatzy, set a new land speed record of 62 mph (100 km/h) in his hand-crafted electric race car.
German automotive engineer Ferdinand Porsche designed the first hybrid vehicle in 1900. Even Thomas Edison got in on the action in 1907, developing a nickel-alkaline battery that proved more durable and less hazardous than lead-acid batteries. His invention never caught on because of its high initial cost, though.
Nonetheless, electric cars continued to gain attention and recognition. The first automobile race on American soil was a 52-mile dash between Chicago and Waukegan, Illinois, held in 1895. Two of the six entrants in the competition drove electric automobiles. By 1900, one-third of all cars on the road were electric, and the New York City taxi service boasted a fleet of 60.

How Automobiles “Became” American and Gas-Powered
In 1908, everything changed, however. That’s when Henry Ford introduced his inexpensive Model T to the American public. The high-quality, gas-powered vehicle quickly gained in popularity. In turn, it signaled the demise of electric and hybrid cars and the advent of America’s car culture. Over time, cars have become so synonymous with the United States, that many have come to assume Americans invented them. In reality, this couldn’t be further from the truth.
The history of the automobile is surprisingly colorful and circuitous. Stretching back to the 6th century AD in China, people have remained fascinated by the idea of horseless travel. Many great thinkers, from da Vinci to Benz, have contributed along the way. What Americans such as Ford did do, however, is transform them from fun inventions into essential parts of daily life.
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