Today’s chart is best viewed full-screen. Explore the high resolution version by clicking here.
Sailors have been circumnavigating the high seas for centuries now, but what could be found beneath the sunlit surface of the ocean remained a mystery until far more recently. In fact, it wasn’t until 1875, during the Challenger expedition, that humanity got it’s first concete idea of how deep the ocean actually was.
Today’s graphic, another fantastic piece by xkcd, is a unique and entertaining look at everything from Lake Superior’s ice encrusted shoreline down to blackest, inhospitable trench (which today bears the name of the expedition that first discovered it).
The graphic is packed with detail, so we’ll only highlight a few points of interest.
Deep Thoughts with Lake Baikal
Deep in Siberia, abutting a mountainous stretch of the Mongolian border, is the one of the most remarkable bodies of water on Earth: Lake Baikal. There are a number of qualities that make Lake Baikal stand out.
Depth: Baikal, located in a massive continental rift, is the deepest lake in the world at 1,642m (5,387ft). That extreme depth holds a lot of fresh water. In fact, an estimated 22% of all the world’s fresh water can be found in the lake.
Age: Baikal (which is listed as a UNESCO World Heritage Site) is estimated to be over 25 million years old, making it the most ancient lake on the planet.
Clarity: Interestingly, the water in the lake is exceptionally clear. In winter, visibility can extend over 30m (98ft) below the surface.
Biodiversity: The unique ecosystem of Lake Baikal provides a home for thousands of plant and animal species. In fact, upwards of 80% of those species are endemic, meaning they are unique to that region.
Who is Alvin?
Since 1964, a hard-working research submersible named Alvin has been helping us better understand the deep ocean. Alvin explored the wreckage of RMS Titanic in 1986, and helped confirm the existence of black smokers (one of the weirdest ecosystems in the world). Though most of the components of the vessel have been replaced and upgraded over the years, it’s still in use today.
The ancient Greek word, ábyssos, roughly means “unfathomable, bottomless gulf”. While there is a bottom (the abyssopelagic zone comprises around 75% of the ocean floor), the enormous scale of this ecosystem is certainly unfathomable.
Objectively, the abyssal plain is not the prettiest part of the ocean. It’s nearly featureless, and lacks the panache of, say, a coral reef, but there are still some very compelling reasons we’re eager to explore it. Resource companies are chiefly interested in polymetallic nodules, which are essentially rich manganese formations scattered about on the sea bottom.
Manganese is already essential in steel production, but demand is also getting a substantial lift from the fast-growing electric vehicle market. The first company to find an economical way to harvest nodules from the ocean floor could reap a significant windfall.
Drill Baby, Drill
Demand for resources can force humans into some very inhospitable places, and in the case of Deepwater Horizon, we chased oil to a depth even surpassing the famed Marianas Trench.
Drilling that far below the surface is a complicated endeavor, and when the drill platform was put into service in 2001, it was hailed as an engineering marvel. To this day, Deepwater Horizon holds the record for the deepest offshore hole ever made.
After the rig’s infamous explosion and subsequent spill in 2010, that record may stand the test of time.
Ranked: Biggest Fast Food Chains in America
Every year, fast food chains rake in north of $200 billion in revenue per year. Here are the biggest chains, ranked by revenue and number of locations.
Ranked: The Biggest Fast Food Chains in America
Fast food is a supersized business in America.
The average American spends as much as $1,200 every year on fast food — and roughly a quarter of the U.S. population eats three or more fast food meals per week.
Today’s unique infographic, via TitleMax, shows just how dominant the quick serve food industry is, and which brands are leading the pack in terms of revenue and store locations.
All of the biggest fast food chains now top $1 billion in sales annually. McDonald’s leads the pack with almost triple the sales of the number two chain, Starbucks.
Below are the top 30 fast food chains in the United States by revenue:
|Rank||Chain||Sales (U.S., 2017)||# of Locations (U.S.)|
|18||Jack in the Box||$3.5B||2,251|
In 2017, the top 30 fast food chains rang up $172 billion in sales at over 140,000 locations across the United States. When smaller chains are also included, annual industry revenue tops a whopping $200 billion.
Fast food can be a profitable business, but certain chains are runaway successes when sales-per-unit are considered. Chick-fil-A’s sales average out to $4.3 million per location — 53% higher than McDonald’s, which brings in $2.8 million of sales per location.
Subway, which is known for having a low franchise fee and no exclusive territory rights, has the lowest sales-per-unit in the top 30 ($419,792).
That said, no one can compare to Subway in terms of sheer volume. The chain has over 25,000 locations, making it not only the biggest fast food chain in the country, but the most common retailer overall (even beating out dollar stores). It’s possible that America has seen peak Subway though — the number of locations has been steadily dropping since 2011.
On the opposite end of the spectrum is Starbucks. The Seattle-based coffee chain has been relentlessly expanding over the past decade.
Of course, not all fast food chains have the ubiquity of Subway and McDonald’s. Many of these brands have achieved impressive sales numbers in specific regions. Whether you’re loyal to Dunkin’ Donuts, Chick-fil-A, or In-N-Out may depend heavily on where you live.
Will America’s next big fast food powerhouse come from an already-strong regional chain, or will it be the result of a new phenomenon, completely?
Wired World: 35 Years of Submarine Cables in One Map
Watch the explosive growth of the global submarine cable network, and learn who’s funding the next generation of cables.
You could be reading this article from nearly anywhere in the world and there’s a good chance it loaded in mere seconds.
Long gone are the days when images would load pixel row by pixel row. Now, even high-quality video is instantly accessible from almost everywhere. How did the internet get so fast? Because it’s moving at the speed of light.
The Information Superhighway
The miracle of modern fiber optics can be traced to a single man, Narinder Singh Kapany. The young physicist was skeptical when his professors asserted that light ‘always travels in a straight line’. His explorations into the behavior of light eventually led to the creation of fiber optics—essentially, beaming light through a thin glass tube.
The next step to using fiber optics as a means of communication was lowering the cable’s attenuation rate. Throughout the 1960-70s, companies made gains in manufacturing, reducing the number of impurities and allowing light to cross great distances without a dramatic decrease in signal intensity.
By the mid-1980s, long distance fiber optic cables had finally reached the feasibility stage.
Crossing the Pond
The first intercontinental fiber optic cable was strung across the floor of the Atlantic Ocean in 1988. The cable—known as TAT-8*—was spearheaded by three companies; AT&T, France Télécom, and British Telecom. The cable was able to carry the equivalent of 40,000 telephone channels, a ten-fold increase over its galvanic predecessor, TAT-7.
Once the kinks of the new cable were worked out, the floodgates were open. During the course of the 1990s, many more cables hit the ocean floor. By the dawn of the new millennium, every populated continent on Earth was connected by fiber optic cables. The physical network of the internet was beginning to take shape.
As today’s video from ESRI shows, the early 2000s saw a boom in undersea cable development, reflecting the uptick in internet usage around globe. In 2001 alone, eight new cables connected North America and Europe.
From 2016-2020, over 100 new cables were laid with an estimated value of $14 billion. Now, even the most remote Polynesian islands have access to high-speed internet thanks to undersea cables.
*TAT-8 does not appear in the video above as it was retired in 2002.
The Shifting Nature of Cable Construction
Even though nearly every corner of the globe is now physically connected, the rate of cable construction is not slowing down.
This is due to the increasing capacity of new cables and our appetite for high-quality video content. New cables are so efficient that the majority of potential capacity along major cable routes will come from cables that are less than five years old.
Traditionally, a consortium of telecom companies or governments would fund cable construction, but tech companies are increasingly funding their own submarine cable networks.
Amazon, Microsoft and Google own close to 65% market share in cloud data storage, so it’s understandable that they’d want to control the physical means of transporting that data as well.
These three companies now own 63,605 miles of submarine cable. While laying cable is a costly endeavor, it’s necessary to meet surging demand—content providers’ share of data transmission skyrocketed from around 8% to nearly 40% over the past decade.
A Bright Future for Dark Fiber
At the same time, more aging cables will be taken offline. Even though signals are no longer traveling through this network of “dark fiber”, it’s still being put to productive use. It turns out that undersea telecom cables make a very effective seismic network, helping researchers study offshore earthquakes and the geologic structures on the ocean floor.
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