Lowering stress levels and becoming a happier person overall comes down to one major strategy: tracking your emotions, and looking for patterns. 

That's what Palo Alto, California-based Sentio believes, anyway, and it's built a tool to help you do just that. 

Sentio's yet-to-be-released Feel wristband is a discreet wearable device that keeps track of your emotions throughout the day. It's designed to log how you're feeling (with the aid of a mobile app) and help you achieve your "emotional well-being goals." 

Here's how it works:

SEE ALSO: This beautiful credit-card-sized phone just might cure your smartphone addiction

The band is waterproof, Bluetooth-enabled, and has a USB port. The flexible material is meant to fit any wrist size.

It comes in four colors: white, black, turquoise, and fire red.

Feel is equipped with four sensors on the inside of the band. Those sensors track your IMU (your movement and activity), skin temperature, electrodermal activity (what happens to your skin when you sweat), and heart rate.

Source: Sentio, National Institute of Health

Being a freelance worker can be liberating — you choose your own hours, what you'd like to do, as well as set your pay per hour. 

However, it also means work is not always guaranteed and can be tough when you need cash to keep coming in to pay your bills.

Dutch online platform for freelance jobs in the Netherlands Hoofdkraan.nl just released a report showing the best cities in the world to work as a freelancer, by looking at 23 factors across 117 cities in total.

The factors include:

• Cost of living;
• Internet speeds;
• Taxation;
• Overall quality of life.

Business Insider took a look at which cities made the top 9 positions in the rankings:

9. Vancouver, Canada — The city is attractive for freelancers due to the high quality of living.

8. Bratislava, Slovakia —It has one of the lowest tax rates out of the all the cities and has a low cost of living, making it a prime place for those who have not got a guaranteed income.

7. Marseille, France —The small city provides all the amenities for a thriving social life but also poses a lot of opportunities for freelancers to work from.

On Wednesday, President Donald Trump will sign an executive order to begin the funding and construction of a border wall between the US and Mexico, one of his long-standing campaign promises. While its unlikely Mexico will pay for the wall, analysts at Bernstein have calculated the possible cost to be between $15 and $25 billion.  

History, politics, and demographics have helped to shape the international borders that separate countries around the world. 

Here, we've collected 23 photos of what borders between various countries across the world actually look like — from walls, to rivers, to barbed wire fences, to simple road markings. 

Talia Avakian contributed reporting on a previous version of this article. 

SEE ALSO: 29 eerie photos that show just how polluted China's air has become

This NASA satellite image depicts the border between Haiti, which is much more arid, on the left, and the Dominican Republic, which is greener, on the right.

This photo of the border between Israel and Egypt was taken by the International Space Station. The border is said to be one of the few that is so visible from space.

The Bering Strait separates the Seward Peninsula of Alaska to the east and Chukotskiy Poluostrov of Siberia to the west. The boundary between the US and Russia lies between the Big and Little Diomede Islands, visible in the middle of the photo here.

Taylor Swift is known for a few things: Her beloved songs, sense of style, and a stable of famous best friends.

But what most people don't know is that the pop star also has impeccable taste in homes. From Nashville to Beverly Hills and New York City, the young icon already has an impressive real estate portfolio.

Trulia put together a list of Swift's recent home buys and shared it with INSIDER. Keep reading to see inside six of her fabulous houses.

NASHVILLE, TENNESSEE: In 2009, when she was 20 years old, Swift bought a penthouse apartment in midtown Nashville for nearly $2 million.

Source: Trulia

It was in the contemporary Adelicia complex, near Tennessee's "Music Row." Swift says she did the interior design herself.

Source: Trulia and Vulture

In 2013, after an interview with the pop star, Vulture described the home as 'whimsically girlie,' with a style that resembles a 'shabby-chic Alice in Wonderland.'

Source: Vulture

One of the most pervasive career trends today is the art of the side hustle.

Discovering a way to monetize your passions or hobbies, whether it be photography, writing, knitting, consulting, you name it, is a fulfilling way to earn some extra cash. Sometimes though, it becomes lucrative enough to pursue full time.

That was the case for 31-year-old Sara Barrett. After graduating from the Massachusetts College of Art and Design in 2007 with a degree in graphic design, Barrett started doing freelance work, creating wedding and baby shower invitations.

In 2009, a client suggested she list some of her artwork on Etsy, an online marketplace for creative sellers and buyers, she told Business Insider. She thought, "'What have I got to lose?'" and set up shop as SimkaSol.

After Etsy customers began requesting her paper prints on pillowcases and clothing, Barrett taught herself to screen print "by the grace of the internet."

"I started learning how to pattern draft and how to use all my industrial sewing machines and it's kind of just been this continual chain of learning a new trade and applying it and then learning another step, just constantly chugging forward," she said.

Barrett kept up with the freelance graphic design — as well as teaching horseback riding lessons — until she realized how lucrative her Etsy shop had become. "It really wasn't until late 2011 where I was like, 'Wow, I'm making enough money to pay all my bills and invest back into the business. So at that point I was like, 'I'm going to go for it," she said. Today, SimkaSol remains Barrett's main source of income.

To date, SimkaSol has raked in more than 16,000 sales on Etsy — and more than 47,800 "admirers"— which accounts for about 80% of Barrett's overall business, she said. The other 20% comes from selling a full collection of women's and men's clothing and home decor on her personal website.

Five years in and Barrett is still the sole employee of her company — aside from a little help from her friends during the holiday season. Business Insider recently caught up with Barrett at her in-home production studio in Massachusetts, where she walked us through a day of one of Etsy's most prolific sellers.

SEE ALSO: Meet the 'Man Repeller', the 27-year-old who turned her fashion hobby into a serious business

Barrett starts her day around 8 a.m. "When you work for yourself you can kind of be like, 'I'm going to get up when I want.'" After taking her dogs out for a walk, she fires up her coffee grinder, a gift from her parents that she's now "addicted" to. "It's probably the most important part of my day."

Barrett currently works out of her home, which includes a 300-square-foot studio. As a one-woman show, all the designing, marketing, and production rests on her shoulders. "I usually spend about an hour in the morning waking myself up to the business by checking emails, checking the site, looking at some statistics — views, likes, shares — just to see where I'm at," she said.

From there, she packages up any pending orders. "During the holiday crunch times, I can work all through the night," she says. "But when it's just my usual schedule I like to package through the morning because it gets me started on my day."

Miley Cyrus has spent years on the red carpet. As a child, she accompanied her dad to events, award shows, and premieres, and started hitting the carpets solo after landing the lead role on Disney's series "Hannah Montana."

Back then, she was known to rock cowboy boots with her innocent and modest outfits. But nowadays, Miley is known for pushing the rules of fashion.

There's no doubt the superstar has had one of the most dramatic transformations of all time. Keep reading to see Miley's wild style evolution:

Miley Cyrus's first red carpet appearance was at a Disney Channel press event at Splashlight Studio in 2006.

She attended the 2006 American Music Awards in this pure white dress adorned with silver beads sparkles, which was perfect for the then 14 year old.

She went to the 2006 CMA's with her dad wearing a colorful, ribbon-striped gown.

Before you sink a lot of cash on a DIY project in your home, you'd be wise to research what home features are currently in vogue, and which are on their way out. 

Online real estate brokerage Redfin analyzed hundreds of millions of listings to see which search terms have grown in popularity over the last six years. The features they selected grew in popularity from 2015 to 2016, though some were more in demand than others.

If you think your best bet to increasing your home's value is to follow the trends, these would likely be worth a try.

SEE ALSO: 15 crazy facts about the outrageous LA mansion that just listed for $250 million

Stainless steel appliances

Year-over-year increase of mentions in listings: 11.1%

According to Redfin's data, stainless-steel kitchen appliances have been popular for quite some time. Many buyers equate them with newness because of their sleek look.

Smart homes

Year-over-year increase of mentions in listings: 40.9%

Redfin's analysis shows that smart-home technology has dipped in popularity over recent years, but it appears to be on the rise again. 

Quartz

Year-over-year increase of mentions in listings: 52.7%

Quartz countertops generally require less maintenance than those made of other materials, and they're likely to last a long time.

A caterpillar recently discovered in Peru behaves unlike any other known caterpillar. 

The critter was spotted by Dr. Joe Hanson, the creator and host of the YouTube channel "It's OK to be Smart." Hanson, along with entomologist Aaron Pomerantz and guide Pedro Lima, were filming in the Peruvian Amazon when they came across the creature.

According to Hanson, this is the first known example of a caterpillar building itself a mobile shelter, which is why it has earned the name of the hermit caterpillar. 

While they were filming, the team noticed that leaf litter on the rainforest floor was moving. Upon closer inspection, they realized a big, fat caterpillar was inside, dragging along a home it had built out of leaves.

Caterpillars are masters of disguise, but this one was something special. When Hanson picked it up, it retreated inside its protective tube. If they hadn't seen it moving, they probably would have walked straight past.

The caterpillar had cut and glued itself a custom suit of camouflage leaf armor, which it drags behind itself like a caterpillar version of a hermit crab. The only difference is hermit crabs move into homes another animal has left behind whereas this caterpillar made its own from scratch.

This week at the Americas Lodging Investment Summit in Los Angeles, Eric Danziger, the CEO of President Donald Trump's hotel-management company, announced that it plans on tripling the number of Trump hotels in the US. More specific plans are already on their way in Dallas, Seattle, Denver and San Francisco. 

Last October marked the grand opening of the latest hotel to be branded with the Trump name: the Trump International Hotel in Washington, DC. The hotel is located inside the Old Post Office Pavilion, which dates back to 1899 and required $200 million in renovations.

While the DC location stayed on track to open ahead of schedule— it hasn't been without a few hiccups. Since its soft opening in September the hotel has had protesters outside its doors.

Let's take a look inside. 

SEE ALSO: Inside the 'paparazzi-proof' building where penthouses are selling for $54 million

The hotel is located near the corner of Pennsylvania Avenue and 12th Street, just a short 15-minute walk to The White House North Lawn.

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Crystal chandeliers hang in the lobby. The hotel's ballroom — the largest in Washington, DC — was named the "Presidential Ballroom."

An old mail chute remains, a nod to the building's past as a busy post office.

The Insider Picks team writes about stuff we think you'll like. Business Insider has affiliate partnerships, so we get a share of the revenue from your purchase.

A few months ago we introduced you to Jomashop, an online watch retailer where you can find name-brand watches at major discounts.

And while the Insider Picks team loves a ton of smaller independent companies that make products, especially watches, there’s a reason that some brands are ubiquitous, and it usually has to do with their high-quality and the consistency of the product.

Jomashop is a company committed to helping customers find value in their quest for a fine timepiece. The site boasts a wide variety of brands at competitive prices, so if you’re in the market for anything from Bulgari to Seiko to Timex, and everything in between, chances are they’ll have an offer that you’d like to take advantage of. And as always, Amazon is a great place to find good value on watches.

The deals on both sites come and go pretty regularly, so every once and a while, we like to check in and see if there's a deal or two worth letting you know about.

Chances are you can find the watch you want for a bit cheaper than you thought.

Editor's note: If you're considering dropping big money on a luxury watch, as with any other major purchase, be sure to compare prices and do some research first. While all of the watches are guaranteed to be 100% authentic, they do not come with a manufacturers warranty. If you have any concerns at all, you can view Jomashop's full warranty policy here.

SEE ALSO: These 13 online classes will help you learn something new in 2017 — and they’re all $10

READ MORE: 7 books that inspired this year's Oscar frontrunners

DON'T MISS: This popular clothing company combined the best aspects of jeans and chinos into the perfect work pants

Daniel Wellington

Daniel Wellington is one of our watch favorite brands to highlight because their versatility and simplicity.

This canvas strap is a nice casual look that works great for easy days at the office and everyday wear while you’re out and about.

Daniel Wellington Glasgow Stainless Steel Watch, $71.96, available at Amazon

Timex

The look of this Timex Chrono makes it one of my favorites out of any watch I’ve seen, regardless of price.

The navy face and leather strap compliment each other perfectly, for a simple look that is agreeable with every look outside of your formal wear. And at less than $50, it’s quite a value.

Timex Chrono Weekender, $44.30, available at Amazon

Raymond Weil

Raymond Weil makes some fantastic timepieces, with simple looks that look professional.

The silver and black color scheme here is understated but formal, and can surely dress up any outfit in your wardrobe.

Raymond Weil Maestro Automatic Men's Watch, $449, available at Jomashop

When the Dow Jones Industrial Average was created in 1896, it had about a dozen industrial stocks.

Apple's addition to the current list of 30 American conglomerates, in March 2015, shows just how far the index has come.

It's no longer focused only on "industrial" stocks. Goldman Sachs' stock accounted for the chunk of the index's postelection gain to the 20,000 milestone it achieved on Wednesday January 25.

Apple replaced AT&T, which was popularly known as American Telephone & Telegraph when it joined the Dow in October 1916.

This index has seen a lot of turnover in its history — and only one of the original 12 members continues to hold a spot in it.

SEE ALSO: What Wall Street is predicting for the stock market in 2016

American Cotton Oil Company

What it did: It formed as a trust after several mill owners in Texas and Arkansas combined syndicates to regulate the price of seeds. It became a corporation in 1889 after the trust was dissolved through a lawsuit.

Where it is now: It evolved into a company that became part of Unilever. The original company was dropped from the Dow in 1901.

Sources: Scripophily, Wikipedia

American Sugar Company

What it did: It was the largest American company in the sugar-refining business in the early 20th century, with investments in the Caribbean. It was established in 1891 with $50 million in capital.

Where it is now: It has since been acquired by American Sugar Refining Inc., whose products include Domino Sugar. It was dropped from the Dow in 1930.

Source: Wikipedia

American Tobacco Company

What it did: The American Tobacco Company acquired over 200 competitors to become the dominant player in the industry. It was founded in 1890.

Where it is now: The Supreme Court ordered it to dissolve following an antitrust lawsuit. It splintered into many smaller companies and renamed itself Fortune Brands. It was dropped from the Dow in 1985.

Source: Wikipedia

The INSIDER Summary:

• Photos of Thailand in the 1890s show what the country looked like before it became a tourist hub.
• The architecture of the king's palace remains the same, but surrounding buildings have changed completely.
• The album probably belonged to a member of the Royal Engineers.

In 2014, tourism accounted for 19.3% of Thailand's GDP. But in the 1890s, during the reign of King Chulalongkorn, of "The King and I" fame, tourists were about as scarce as skyscrapers. 

25 Blythe Road, an antiques auctioneer in London, auctioned off a collection of photographs that show what Thailand looked like before it became the popular tourist destination it is today.

The album, which likely belonged to a member of the Royal Engineers, shows landmarks like the Grand Palace with not a selfie stick or fanny pack in sight.

The Grand Palace in Bangkok didn't have many visitors in 1892.

Nowadays, it's a must-see.

Ayutthaya was the ancient capital of the Kingdom of Siam.

Everything around us is becoming connected. As a result, we are seeing shifts in investments and returns. There is already a great demand for network expansion, cyber security and insurance. And generally, the prices of hardware will fall as IoT becomes less of a novelty.

All of this opens up a huge opportunity for everyone to make and save a lot of money. We will invest $6 trillion in IoT between 2015 and 2020, which will yield $12.6 trillion ROI over the next decade. Enterprise will make up the majority of the investment dollars, followed by government and consumer.

BI Intelligence has created a slide deck exploring the most disruptive trends in IoT. To get a more detailed view of the progression, landscape and projections of the Internet of Everything, access the complete slide deck by clicking here.

Some of the topics covered include:

• The market drivers for the IoT.
• Forecasts for the IoT market.
• A breakdown of how many industries are utilizing IoT devices.
• A look at how governments are using the IoT to revolutionize their cities and defense.
• An examination of the smart home and connected car market.
• And much more.

Below are 8 sample slides from the 60-page deck. Want the full deck? Access it here for FREE >>

Want the full 60-page slide deck?  Access it Here - FREE >>

Want the full 60-page slide deck?  Access it Here - FREE >>

Want the full 60-page slide deck?  Access it Here - FREE >>

NASA isn't thrilled about having to pay Russia billions of dollars to launch US astronauts on Russian rockets inside of Russian spacesuits.

But that's the current spaceflight pickle the space agency finds itself in; there's really no other option unless you're China.

However, two aerospace companies — SpaceX and Boeing — are working hard to fulfill contracts for NASA to build and launch astronauts to low-Earth orbit as soon as 2018 (a delay of about 3 years). SpaceX is working on its Dragon spacecraft while Boeing is developing and testing its CST-100 Starliner spacecraft.

To that end on Wednesday, Boeing for the first time publicly unveiled a crucial new piece of its Starliner system: A spacesuit to protect the next generation of astronauts as they launch toward the International Space Station, and eventually more exotic destinations like an asteroid or even Mars.

Behind the new suit is former astronaut Chris Ferguson, director of Boeing's Starliner Crew and Mission Systems program, and lead designer Shane Jacobs.

"Astronauts had formerly had these relatively bulky, heavy suits with thick neck rings. And we learned throughout the years that maybe we didn't need that," Ferguson said in a Boeing promotional video. "We've simplified the suit. It's lightweight."

Typical space shuttle suits weighed about 33 lbs (15 kilograms), while Boeing's new suit weighs about 12 lbs (5.4 kilograms) — roughly a few Macbook laptops' worth of mass.

The suit, according to Boeing, is also much cooler than typical spacesuits. Below the shoulder material, for example, is a mesh that allows passive airflow to the suit. "You can pretty much lay there without any external cooling. It's that comfortable," Ferguson said.

The suit also features a helmet that comes on and off with a large zipper, and smaller and less bulky gloves (which, yes, are made with material that allows them to interact with touchscreens).

Here are some of the first public views of Boeing's new spacesuit.

SEE ALSO: Here's how much money it actually costs to launch stuff into space

DON'T MISS: SpaceX and its biggest competitors are waging a space battle on Capitol Hill

This is the new CST-100 Starliner spacesuit that was designed and built by Boeing.

Here's former astronaut Chris Ferguson, one of it's designers, wearing the device. The gloves are compatible with touch screens.

The helmet is attached with a thick, air-tight zipper — no heavy or bulky neck ring required. NASA astronaut Eric Boe is the guy in the suit.

Stuck in a rut at your job?

Maybe it's time to switch gears.

LinkedIn recently released data ranking the 20 most promising jobs of 2017.

The rankings factor in median base annual salary (30%), career advancement potential (25%), job openings (20%), year-over-year growth in job postings, and regional availability.

You can see the full list at LinkedIn. Find the top 11 below, along with the median base salary, number of job openings on LinkedIn, and skills most closely associated with the position on the site.

SEE ALSO: Here's the truth about whether an employer can find out how much you made at your previous company

11. Software engineer

"The engineer is typically the person who helps to develop the ways that software functions created by a software design team will work." (via PayScale)

Median base salary: $94,000

Job openings: 10,000+ (13% growth 2015-2016)

Top skills: Java, C++, SQL, Linux, XML

10. Scrum master

"A scrum master is the facilitator for an agile development team. Scrum is a methodology that allows a team to self-organize and make changes quickly, in accordance with agile principles." (via TechTarget)

Median base salary: $100,000

Job openings: 400+ (104% growth 2015-2016)

Top skills: Agile methodologies, software project management, scrum, requirements analysis, SQL

9. Data engineer

"Data engineers build massive reservoirs for big data. They develop, construct, test and maintain architectures such as databases and large-scale data processing systems." (via Master's in Data Science)

Median Base Salary: $105,000

Job openings: 900+ (85% growth 2015-2016)

Top skills: Hadoop, Python, SQL, big data, Hive

Disney and Lucasfilm revealed the long-awaited title for "Star Wars: Episode VIII" Monday. 

While fans were excited to learn the title of the next chapter in the Skywalker saga will be called "The Last Jedi," it naturally kicked off a lot of questions.

Who is the last Jedi? Is it Luke? Rey? Could it be someone else all together? Are we talking about one individual, two, or a group of Jedi? And, most importantly, what's up with that ominous red font in the new logo?

As we patiently wait for the first trailer for "Star Wars: Episode VIII," here's what INSIDER and fans alike are making of the new "Star Wars" title.

SEE ALSO: The 22 most exciting new shows of 2017 you have to see

THEORY 1: The title is about Luke Skywalker and only Luke.

This is the most obvious answer. It was noted by fans online that the new title was alluded to in the opening crawl of "The Force Awakens."

The line clearly references Skywalker in the text, which reads the First Order "will not rest until Skywalker, the last Jedi, has been destroyed." 

Skywalker actor Mark Hamill offered the Associated Press a reaction to the title calling it "straightforward." If you go by that, it seems like it could be safe to assume the title is referring to Luke.

If Skywalker is the last Jedi, what does this mean? Since Hamill described the title as "straightforward" and "minimalist," it could just be a simple declaration and nothing more. Since Skywalker was only in the final moments of "The Force Awakens," it could be a hint that this movie will be more centered around him and his story.

THEORY 2: It's referencing more than one Jedi.

The plural form of Jedi is also, yup, Jedi. Who's to say the the title is solely referring to Luke? 

It's expected that Luke will train Rey in the ways of the Force in "Episode VIII" just as Yoda trained him back in "Empire Strikes Back." If that's the case, then the title could be referring to the two of them as the last Jedi prepping to take down Snoke and Kylo Ren.

THEORY 3: That red font is hinting at an ominous fate for Luke.

The biggest conclusion fans have jumped to is that Luke Skywalker may die in the series' next installment because of the dark, ominous red font of "Star Wars."

Fans started tweeting their concerns for Luke almost immediately after the reveal. Some think Luke will bite the bullet and then Rey will take his place as "The Last Jedi." One fan even made a fake opening crawl filled with pleas to not kill off the character.

I wouldn't get on board the "Skywalker is toast" train just yet. We've seen Lucasfilm use the red font in "Star Wars" logos before. It was used for "Return of the Jedi," and that film ended on a happy note. Still, it hints at a darker tone.

The INSIDER Summary:

• Earth is home to some truly beautiful natural wonders.
• From colorful bodies of water to giant naturally-formed crystals, these are some of the world's strangest natural wonders.

Ever played the game of Twister on water? The green, yellow, and brown polka dots that form on British Columbia’s Spotted Lake each summer make it look like you could.

It’s a far cry from the stereotypical landscapes of clear blue lakes, rolling green hills, and white-sand beaches that inspire most travelers—and that’s part of what makes strange natural wonders like Spotted Lake so thrilling. A recently discovered cave that grows crystals the size of four-story buildings, a lake the color of a strawberry milkshake, and a glacier that seems to bleed sound like they’re from another planet, but can be seen right here on earth, and they remind us that there’s plenty of mystery left to explore.

For billions of years, our planet has been a work in progress. Wind, water, pressure, minerals, heat, and lesser-understood forces mold and shape our environment, carving out caves and canyons, flooding and drying lakes, shaping mountains, shifting shorelines, moving the ground beneath our feet, and creating all manner of strange formations.

Long before scientists were able to offer explanations for the world’s more curious natural achievements, locals have been coming up with their own ideas. Māori legend says the enormous boulders found on New Zealand’s Moeraki Beach are the washed-ashore gourds and sweet potatoes from the wreck of a mythological canoe, while Irish folklore attributes the creation of the Giant’s Causeway to a quarrel that spanned across the sea to Scotland.

Such bizarre formations are, in fact, the result of time and pressure working against soil and rock, an often slow and methodical process that yields showstopping results. Others are the result of a sudden dramatic shift in conditions. Together, they caution us, as author Will Durant wrote in the January 1946 edition of Ladies Home Journal, that “civilization exists by geological consent, subject to change without notice.”

Seeing is believing, so take our tour of the strangest natural wonders—and keep an eye out for what the powerful planetary forces may do next.

Marble Caves, Chile

Six thousand years of wave erosion created the undulating patterns that give these caves their marbleized effect, enhanced by the reflection of the blue and green water of Carrera Lake, near Chile’s border with Argentina. Although the area is threatened by a plan to build a dam nearby, for now, visitors can kayak throughout the caves on days when the waters are calm.

Lake Retba, Senegal

It looks as if someone poured a giant bottle of Pepto-Bismol into Lake Retba—that’s how deeply pink these waters are. The color is actually caused by a particular kind of algae called Dunaliella salina that produces a pigment. The salt content is extremely high, reaching 40 percent in some spots and allowing the algae to thrive (and swimmers to float effortlessly on the surface of the 10-foot-deep lake). Blinding white piles of salt line the shores, and locals work several hours a day harvesting salt from the bright pink water.

Asbyrgi Canyon, Iceland

Legend has it that the Asbyrgi Canyon in northern Iceland was created when the hoof of a Norse god’s horse touched the earth, slicing through 300-foot-tall cliffs and flattening an area just over two miles long and more than a half mile wide. The likelier scientific explanation is that two periods of glacial flooding carved the canyon between 3,000 and 10,000 years ago. But standing atop the cliffs, with the green carpet of the horseshoe-shaped canyon spread before you, it’s fun to imagine otherwise.

Warning: There are massive spoilers ahead for "Split."

M. Night Shyalaman's horror thriller "Split" wowed audiences at the box office opening weekend. One reason for the success may have been the giant reveal at the movie's end. Bruce Willis pops up, linking the film to Shyamalan's previous 2000 thriller "Unbreakable."

If you were taken aback by the reveal that "Split" was a supervillain origin story, there were a lot of little clues along the way that hinted the two films were connected. 

While some of them would have been difficult to notice upon a first view, fans picked up on several hints sprinkled across the film. And then there's an obvious one that was hidden in plain sight that big Shyamalan fans should have seen a mile away.

Keep reading to see several hints in "Split" that connected the film to "Unbreakable" before the big reveal.

SEE ALSO: 5 theories on what the new 'Star Wars' movie title may mean for 'Episode 8'

1. The soundtrack

"Unbreakable" fans may have caught the film's theme trickle in near the end. Refresh your memory and listen to it here.

2. Both David Dunn (Bruce Willis) and Kevin Wallace Crumb (McAvoy) discovered their powers onboard a train.

Dunn escaped a train accident unscatched while Crumb headed to an empty Amtrak train where he unearthed his 24th personality, the beast.

3. The train connection may go even deeper.

As several Redditors pointed out, Kevin leaves flowers on the train platform before boarding. It's suggested in the film that Kevin's father died in a train crash, possibly the very train crash that occurred in "Unbreakable."

The United States is home to some of the most incredible natural sights and wonders in the world — from towering mountains to otherworldly rock formations — and we're grateful the National Park Service honors and preserves many of these unique sights.

The agency proudly fosters outdoor exploration for over 300 million guests each year, but if you haven't been fortunate enough to visit the powerful geysers of Yellowstone or the labyrinthine tunnels of Mammoth Caves in person, then fear not.

We've rounded up some of the most awe-inspiring and unique features of national parks across the country for your appreciation. 

Zion National Park in southwestern Utah is known for its breathtaking red sandstone canyons. The Narrows in Zion Canyon is a popular hike, featuring walls that are 1,000 feet tall and a river less than 30 feet wide.

An easily accessible park from much of the East Coast, Shenandoah National Park is a wonderland of vistas and calming waterfalls in Northern Virginia. The park is in the Blue Ridge Mountains, and a portion of the Appalachian Trail runs through it.

At Kenai Fjords National Park in Alaska, visitors can get up close and personal to marine mammals. If they're lucky, they'll also catch a glimpse of one of the park's 40 glaciers "calving," meaning that massive chunks of ice will break off the main glacier and crash into the bay below.

Hedge funds have a reputation for being shrouded in mystery.

But SumZero, an online community of buy-side professionals, has just made them a little less mysterious by revealing how much some people in the industry get paid.

Their 2017 compensation report for hedge fund professionals analyzes the 2016 compensation information of approximately 4,500 of their more than 13,000 members.

The report breaks down the compensation of those users based on a number of factors including job title, years of experience, firm size and investor performance.

"Title remains an important factor in compensation at hedge funds, even when accounting for experience," the report said. "Thus while years in the industry are important, titles and the corresponding responsibility come with greater monetary rewards."

The median pay for hedge fund executives, including bonuses, was $400,000. That number is flat compared to 2015. Now that may not sound like a lot when you think of all the billionaire hedge fund managers covered in the media, but SumZero's community skews younger, and wealthier members tend not to disclose their information.

In addition, it is important to note that there are thousands of hedge funds, with a large number of small funds and a handful of industry giants. Some of these small funds might be staffed by a single employee.

To read the report in full, click here.

The median pay for hedge fund executives, including bonuses, was $400,000.

Those working at bigger funds tend to earn more.

It pays to be in New York.