Lockheed Martin has over 3,100 F-35s on order, meaning that the world's skies could soon be crowded with variations on the same advanced warplane.

But there are lots of other amazing military planes out there. And they're cool for all kinds of reasons: stealth, long range, armaments, maneuverability — or just for looking cool.

Whether it's a sleek design, or pure unadulterated deadliness, these are the best and baddest planes in the air today. 

This post was originally by Geoffrey Ingersoll.

The Russian-built Sukhoi Su-35 is one of the most maneuverable birds in the sky.

The Chengdu J-20 is China's first 5th-generation fighter. Little is known about it other than that the Chinese want it to have stealth — and that it looks a bit like a spaceship.

Though expensive and reliably dysfunctional, the F-35 has vertical take-off and landing capability, stealth, and highly advanced targeting capabilities.

In February, Y Combinator hosted its second annual Female Founders Conference. Women who have helped found companies that Y Combinator has backed were invited to come and speak about their experiences founding a startup.

After the conference, Gregory Koberger, the founder of developer hub ReadMe.io, and software engineer Kim Pham created a book of elaborate doodle notes based on the advice of each founder who spoke at YC's event.

We've compiled those notes of advice here. 

Danielle Morrill, CEO and cofounder of startup intelligence platform Mattermark

Olga Vidisheva, founder and CEO of e-commerce website Shoptiques

Tracy Young, cofounder of construction app PlanGrid

Iran's Supreme Leader Ali Khamenei is reportedly dying.

The ayatollah, the final arbiter of all of Tehran's internal and external policies since 1989, is thought to have terminal cancer and his death could be imminent. 

Once Khamenei dies, Iran will undergo an important political shift. Since the Islamic Revolution installed a clerical theocracy in 1979, the country has only had two supreme leaders, meaning there's only been a single power transition in 35 years. Khamenei has ruled as Iran's supreme leader since 1989 after the death of the first supreme leader, Ruhollah Khomeini. 

After Khamenei's death, Iran's constitution stipulates that the next supreme leader is to be chosen by the Assembly of Experts, a body which hasn't been consulted in decades. The assembly, comprised of 86 elected religious leaders, would have the ultimate say in who will replace Khamenei.

So far, all signs point to the next supreme leader of Iran being just as much of a hardliner as the conservative Khamenei — if not more so. In an internal election, the Assembly of Experts elected conservative Ayatollah Mohammad Yazdi as the head of the political body on March 10. Meanwhile, Iran's Islamic Revolutionary Guards Corp (IRGC), a nationalistic and sectarian military force long patronized by Khamenei, is at the zenith of its political power in the country, Mehdi Khalaji, a senior fellow at The Washington Institute, writes for Politico.

There are a few plausible candidates, but none of them represents a major rupture with the current revolutionary clerical regime. 

"It is difficult to prophesy the outcome of Iran’s current power struggle,"analyst Ali Alfoneh wrote in a policy brief for the Foundation for Defense of Democracies. "But given the likely candidates to lead the country, one scenario may be safely ruled out: that Khamenei’s eventual demise will usher in a moderate Islamic Republic at peace with the world."

With that in mind, here are the most likely successors to Khamenei's rule. 

Armin Rosen contributed to this report.

Ayatollah Mohammad Yazdi

Yazdi, 84, is nearly a decade older than the 75-year-old Khamenei. According to Reuters, Yazdi served as the head of the judiciary throughout the majority of the 1990s. He is now back in the country's political spotlight after a surprise decision by the Assembly of Experts to elect him to the head of the body. 

According to scholar Ali Alfoneh in a policy brief for the Foundation for Defense of Democracies, Yazdi is a hardline ayatollah. If elected, he would likely continue the conservative policies of Khamenei, with harsh religious rule inside Iran alongside an aggressive sectarian foreign policy. Yazdi would also likely continue the state's patronage and expansion of the IRGC. 

Ayatollah Mahmoud Shahroudi

Ayatollah Mahmoud Shahroudi, 66, has a similar pedigree to Yazdi. Alfoneh notes that Shahroudi is also a former head of the Iranian judiciary, and was recently elected the deputy of the Assembly of Experts below Yazdi.

In an email to Business Insider, Alfoneh said that Shahroudi is one of the candidates for Supreme Leader that could count on the support of the IRGC. 

According to Haaretz, Shahroudi was born in Iraq. He is considered to be a conservative with views in line with the majority of Khamenei's rulings. Alfoneh notes that Iraqi-born Iranians such as Shahroudi are over-represented in the country's intelligence services. Although observers have long wondered whether Khamenei himself would ever sign on a comprehensive nuclear deal, on March 10 Shahroudi came out in support of a potential nuclear agreement between Iran and the West. 

Ayatollah Sadeq Larijani

Ayatollah Sadeq Larijani, 53, is a dark horse candidate, according to Alfoneh's policy brief. Larijani is the current head of the judiciary, and like Shahroudi he is also originally from Iraq. Should Larijani be elected as the next Supreme Leader, he is likely to follow the overall policies of Khamenei and continue to patronize the IRGC. 

According to an analysis by Mehdi Khalaji of the Washington Institute, Larijani is seen as inexperienced and lacking in religious credentials within Iran. However, he has overcome these criticisms through unwavering support for the Supreme Leader and the religious regime.

Larijani was the youngest cleric ever to be appointed to Iran's Guardian Council, the supervisory body that oversees all laws passed by Iran's parliament. It can also vet political candidates. 

The 25-acre estate of businessman and former Texas Rangers owner Tom Hicks in Dallas, Texas has hit the market for $100 million.

First spotted on the Wall Street Journal, the property known as the Hicks Estate is in Dallas' prestigious Preston Hollow neighborhood and combined has a total of 35,000 square feet.

In addition to the main four-story mansion, the estate has a two-story guest house, three-story pool house, and caretaker's home.

There's also a country club-sized pool, formal gardens, a helipad, tennis courts, a gym, panic room, movie theater, and 500-bottle wine storing room.

“This is the first time that the Hicks estate has been offered publicly through national real estate listing networks and marketed actively,” listing agent Allie Beth Allman, who sold the estate to Tom and Cinda Hicks in 1997, said in a press release for the home. “This is a once-in-a-lifetime opportunity for a new buyer — only the third owner in 77 years — to acquire this magnificent property.”

The Hicks Estate was originally listed for $135 million back in 2013, but was unable to find a buyer. The home, which was built in 1938, has been completely renovated and expanded for the new owners.

According to Allman, Hicks and his wife are selling the estate now that their children have moved out. The couple are hoping to travel more and pursue other interests.

Welcome to the Hicks Estate in Dallas, Texas. The home is in the neighborhood of Preston Hollow and it features a main house, two-story guest house, recreation complex, three-story pool house, and even a caretaker's house.

The property is massive with a total of 25 acres and 35,000 square feet. It was built in 1938 and completely renovated in 2000.

This is the entry hall of the main mansion. The home is extremely safe with a panic button by every door and in every bathroom, a panic room in the basement, 31 security cameras, and a walk-in safe.

For the first time ever, a prize for the best photo taken with a mobile phone will be given at the Sony World Photography Awards. 

The panel received 10,293 entries from amateur and professional photographers all over the world. Believe it or not, all of these images were taken with a cell phone. 

20 photos have been selected for the shortlist. Anyone can vote by visiting the World Photography Organisation's web site and "liking" their favorite photo. Voting closes March 17.

The winner will be announced at the 2015 Sony World Photography Awards gala ceremony on April 23, along with the winners in other categories. 

A bridge disappears into the fog in this photo by Helen Whelton of the UK.

A sailor hits an obstacle in this photo by Carla Vermeend of the Netherlands.

Craig Atkinson's photo shows two young ones at a wedding at Tatton Park, a historic estate in the U.K.

She's only 23, but Kayla Itsines has already become a household name in the Australian fitness community. Now, she's about to make it big in the U.S..

The personal trainer and health guru has amassed over 2.3 million followers on Instagram where she posts workout moves, recipes, fitness tips, and inspirational messages.

But unlike competing fit-stagrammers who have built their audiences by posting selfies of their seemingly unattainable bodies, Itsines is all about accessibility. Her message is that anyone can lead a healthier lifestyle and through social media and her online fitness guides, she wants to help them take the first step.

She's now on an unofficial global fitness world tour that will be culminate in a trip to America this spring.

Kayla Itsines is 23 and from Adelaide, Australia.

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According to her website, Kayla's journey began in 2008, when she started a personal training course at the Australian Institute of Fitness.

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After graduation she took a job at a “women’s only” personal training center. However, she soon realized that the methods being taught failed to help clients achieve the look and confidence they desired.

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America's gun industry has been going gangbusters.

And that's the message gun-maker Smith & Wesson is telling its investors.

The company recently published a 48-slide presentation highlighting the health of the company and the industry.

It includes tons of information showing America's ever-increasing love for guns.

We pulled the most interesting slides.

We just saw the second best February for background checks, which is a proxy for demand.

The number of background checks for guns has trended higher in most of the last decade.

There's just as much interest for handguns as there is for rifles and shotguns.

The 223-year-old White House, has 6 levels, 132 rooms, 35 bathrooms, 412 doors, 28 fireplaces, and is home to the world's most powerful person. The most public of private residences is also a command center for nearly 17,000 employees.

Here are some of our favorite facts and stories of what life is like inside the White House:

In order to cut costs and save on manpower during WWI, President Woodrow Wilson kept a flock of 48 sheep to maintain the White House lawn. According to the White House, wool was auctioned off and $52,823 was donated to the Red Cross.

During WWII blackout curtains were placed over the windows of the White House, antiaircraft guns installed on the roof, gas masks hung from their straps on furniture, and the gates to the home were closed, according to author C. Brian Kelly of "Best Little Stories from the White House."

According to author William Seale, White House engineers asked President Roosevelt if they could change the color of the home by painting it in the "military camouflage style." 

In 1970, Elvis Presley showed up at the White House gates and asked to meet President Nixon. The Secret Service showed "the king" in and the president was thrilled to meet him in the Oval Office.

The Nixons didn't finish moving out of the White House in time and thus President Ford had to serve part of his term from his personal home.

President Ford was once locked out of the White House in his robe and slippers in the wee hours of the morning after taking his dog Liberty outside to do her business. Since every door was locked, President Ford began to pound on the walls.

"The White House sprang alive, lights came on everywhere, and the Secret Service rushed to the scene to let the president back into his own house," Kelly writes.

Secret Service agents are responsible for the keys to the White House but due to several security breaches, the exterior doors automatically lock.

The West Wing was meant to be temporary, but President Taft didn't like the idea of walking to another building to go to work. The West Wing is home to the Oval Office and the Situation Room.

According to former White House Deputy Director Natasha Neely, the West Wing has radiation detectors. During a tour, Neely was informed by Secret Service agents that someone in her group brought in a form of radiation and nobody could proceed until the source was identified.

Insiders have a different name for the "Situation Room," they call it "Woodshed."

The exterior of the White House requires 570 gallons of Sherwin Williams' "Whisper White." 

The Secret Service has a code for when the president and first lady are spending "alone time" together. Agents refer to this private time as "the couple is discussing the Bosnian problem." 

All food headed to the White House is screened at a separate off-site location first. If guests were to bring food into the White House the Secret Service would dispose of it immediately. 

Luxurious State Dinners are funded by taxpayers but at the end of every month the first family is billed for all of their groceries, toiletries, and dry cleaning.

SEE ALSO: Inside America's most famous house

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You may have heard of Yik Yak, the anonymous gossip app that lets you post anything you want without revealing who you are.

It's been around for about a year, and since then the Atlanta-based startup has raised $73.5 million in venture capital funding from investors including Kevin Colleran, Tim Draper, and Sequoia Capital.

(Here's how it became a ~ $400 million startup in 365 days)

We've put together a guide to show you how to use Yik Yak, which has already wreaked havoc on high schools and colleges. It was live my last spring at Syracuse when I was a senior  there. Now it has spread to 1,600 colleges across the nation.

Here's what it looks like when you open Yik Yak.

Since Yik Yak is location-based, you'll have to give the app permission to use your location. You don't have to register with Yik Yak; there's no login process or usernames. It's completely anonymous.

When you load the app, you're shown the newest Yaks within a 1.5-mile radius of you.

You probably noticed a lot of brown and tan rubber-bottomed foul weather shoes this season.

Most likely, it's L.L. Bean's Bean Boot, which has undergone a popularity spike.

But they're not trendy on purpose.

In fact, the boot has been in production — largely unmodified apart from slight changes for new technology — for more than 100 years. Their popularity has waxed and waned during this time, but they've always endured. They're the unofficial mascot of L.L. Bean.

But now, they're really thriving.

"They’re all over college campuses and high schools,”  L.L. Bean spokesperson Carolyn Beem told Boston.com. “Without changing anything, they’re back in style.”

In fact, the boots are so popular they sell out every winter. In December, Boston.com reported that between 60,000 and 100,000 pairs were backordered.

"The number of boots we have sold over has grown steadily over the last several years," LL Bean spokesperson Mac McKeever told Business Insider. "Especially the last three years."

Bean sold approximately 450,000 boots this past winter — which is a new seasonal record. 

Why are the 100-year old boots so popular now? A few reasons.

• "Legacy" products are incredibly trendy now. Consumers, especially millennial consumers can connect to with history and a bulletproof track record — both of which the Bean Boot has in spades. L.L. Bean's founder, Leon Leonwood Bean, started selling his Maine Hunting Shoe back in 1911 — which is where the Bean Boot comes from.
• Their slightly goofy aesthetic is back in style. The "normcore" Americana sensibility the boots give off, along with the aforementioned legacy, are both very "in" right now among a lot of demographics — especially young urbanites.
• The boots are an incredible value. The base model is only $79, and comes with LL Bean's unconditional satisfaction guarantee. Bean even lets you decide if you're satisfied, so you can bring back your boot any time you want for virtually any reason — no questions asked.
• Speaking of bulletproof, that's exactly what Bean Boots are. They're well-known to be completely flawless from a functionality perspective. They are truly "buy it for life," and many owners see the boots perform for decades without replacement.

Both how the boots are made and how they look has been essentially unchanged since they were first introduced as the Maine Hunting Shoe. Bean was an avid outdoorsman, and he designed the boot for fly fishing, hunting, etc. Most boots were all leather in the earliest model, but Bean had the idea to sew a rubber bottom to a leather top, for a dry, comfortable foot.

Apart from a few technological improvements, they're still made the same way they were 100 years ago: hand-stitched in Maine. According to McKeever, it can take several months to train someone to operate the old-fashioned stitching machines.

Since demand for Bean Boots has taken off, the company has purchased another rubber molding machine for about $1 million and added another shift at their boot factory in Lewiston, Maine — which is now running almost 24/7 — to try and meet demand.

As of March 11, however,  the boots are still on back order until late spring or summer. If you go to the L.L. Bean website to place an order, this message greets you:

Our advice: order the boots now if you want a pair for next winter.

SEE ALSO: The 3 Kinds Of Boots Men Need For Winter

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NOW WATCH: 14 things you didn't know your iPhone headphones could do

There are very few cars that have been in continuous production for 50 years.

The Porsche 911 is one of them.

In fact, if the lineage of the 911 is traced to its roots, you will find that it is actually related to the original 1930s Volkswagen Beetle.

While a few aspects of the 911 have changed over the years, even more have stayed the same. The engine hanging over the rear axle is the most obvious hallmark that has remained the same for the entire production run. Such a heavy weight should act like a pendulum and throw the Porsche off balance, but instead this Porsche is one of the best handling cars on the road today.

The distinctive shape has also changed very little in the last 50 years, but that is what makes the car an icon.

The Corvette, 10 years older than the 911, has changed completely since it was introduced in 1953 and would be unrecognizable to someone who has only seen a first generation car.

An owner of the original 911 could teleport 50 years into the future and still instantly recognize a new car on the road as an evolution of his own.

Have a look at how this icon has evolved.

[An earlier version of this article was written by Travis Okulski.]

The Beetle is the grandfather of the 911. Ferdinand Porsche Sr. designed the "People's Car" in the late 1930s. It was not fast, but basic design elements like round headlamps and a engine in the rear made their way to Porsche's next car.

If the Beetle was the grandfather, the 356 is the father. Porsche once again used a rear-engine layout, but the 356 was lower, wider, and faster than any Beetle on the road in 1948. It stayed in production until 1965.

The original 911 entered production in 1963 as a more usable and refined alternative to the 356. The round headlamps and distinctive profile are readily apparent. The five spoke Fuch's wheels also became closely associated with the 911; a replica version is still made today.

Google Maps announced in a blog post Thursday that it has officially made it to Mount Everest.

Google has teamed up with Ava Sherpa, a Nepalese mountaineer who has reached the summit of the world’s most famous mountain a record 21 times as well as nonprofit Story Cycle to bring the rest of the world digitally to the Khumbu region in Google Maps.

The pictures don’t take armchair travelers to the top of the mountain —yet — but around the region and communities at the base of the mountain, such as the Phortse, Khumjung, Thame, Lukla, and the Namche Bazaar.

“In the shadow of Mt. Everest lies a group of sacred valleys known as the Khumbu,” the landing page on Google Maps reads. “For centuries this remote mountainous region has been the homeland of the Sherpa people. Discover the hidden treasures along the trail and off the beaten path.”

Google takes you to each village and lets viewers explore medical centers, churches, see the “yak parking lot,” and even meet the people who live there including Kancha Sherpa, the last living survivor of the first expedition to summit Mt. Everest.

“Our region is famous for being home to Everest, but it’s also the home of the Sherpa community and has been for centuries,” Ava Sherpa, who also has started the Ava Sherpa Foundation, a nonprofit that works to give more opportunities to the children in Khumbu, said in his Google blog post. “The region has much more to offer than just the mountain. So last year, I guided the Google Maps team through my home region to collect Street View imagery that improves the map of our community.” 

The goal of the project is for the world to have a better understanding of the rich history of Khumbu and its people.

Keep reading to see more of the communities that live around Mount Everest below.

Phortse is a farming village roughly 12,600 feet above sea level. It has a lodge, library, church, and health clinic.

Khumjung is a village as well as a world heritage site and that over 13,000 feet above sea level. It has the internet as well as mobile and landline phones.

Thame is a small village that is the home of Ava Sherpa and many other famous Sherpa mountaineers. It’s monastery is one of the oldest in the region.

Lukla is one of the lower villages at 9,400 feet above sea level. It has a small airport, as well as shops and hotels that are frequented by tourists attempting to climb the mountain and visit the region.

Namche Bazaar is a village that is perched at over 11,000 feet above sea level on the sides of a hill. It’s the main tourist hub of the region, and has a police check, post office, and a bank.

Below is a video of the Khumbu region and gorgeous views of Everest.

And you can trek the mountain yourself and see even more pictures on the Google Maps page here. 

SEE ALSO: 22 Amazing Destinations You Can See With Google Street Views

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How do some of the world's most successful entrepreneurs spend their money to make their lives easier and/or better?

It's one of my favorite questions to ask of my guests on my daily podcast, So Money.

Since launching the show two months ago, I've had the great privilege to interview some of the world's top business minds, authors, and influencers including Tim Ferriss, Tony Robbins, and Robert Kiyosaki.

Here's what they — and six others — had to say.

Farnoosh Torabi is an award-winning financial author and host of the daily podcast So Money. Want to learn more? Download her free e-book, "SoMoney Secrets: Financial Habits of Highly Successful People."

Tim Ferriss: 'Laundry and housecleaning.'

Tim Ferriss, the multiple New York Times bestselling author of "The 4-Hour Workweek,""The 4-Hour Body," and "The 4-Hour Chef" is also an entrepreneur, angel investor, and wildly popular podcaster.

Understandably, he doesn't have time to wash and fold his clothes. And mathematically speaking, outsourcing these tasks is more than worth it, since the $10 per hour or so that he pays to have someone else perform his laundry is much less than Ferriss' personal hourly earnings.

"It is almost impossible to find anyone who has made millions of dollars who doesn't delegate at least a handful of time consuming things in some fashion," he says.

Listen to the full interview with Tim Ferriss.

Tony Robbins: 'Private jets.'

"Of all the privileges I have in my life, this is the greatest … to go when you want, where you want," Tony Robbins, author of "MONEY Master the Game: 7 Simple Steps to Financial Freedom," tells me. "There's nothing that changes your quality of life when you travel as much as I do, as [private jets]."

The decision to switch from commercial to chartered flights happened in Robbins' early 30's after flying from San Diego to Aspen to visit a wealthy friend over the holidays. Due to delays and cancellations, what should have been a three or four hour trip took Robbins nearly half a day.

When he arrived, his friend pulled him aside and asked, "Why would you spend 12 hours of your time traveling? You could have been here in 90 minutes." Next time, charter a plane, he suggested. "It will change your productivity more than anything on earth."

Listen to the full interview with Tony Robbins.

Robert Kiyosaki: 'My education.'

"I'm constantly studying," Robert Kiyosaki, author of "Rich Dad, Poor Dad," tells me. "I'm reading books constantly … and they cost only twenty bucks!"

At the time of our interview the finance guru was studying currency collapses, a topic he discusses deeply in his new book, "Second Chance."

The financial guru also makes sure to surround himself with smart, wealthy individuals, as part of his ongoing education. "I have my advisor friends who are … all entrepreneurs, all multi-millionaires … My time is valuable."

Listen to the full interview with Robert Kiyosaki.

Chances are your Facebook feed or Twitter has been flooded by people sharing a story of a 47-story skyscraper in Spain that was built without elevator shafts.

The problem is that the story is almost two years old and was debunked just as swiftly as it came out.

The building in question is the skyscraper InTempo in the Benidorm beach resort in Spain that was designed by Spanish architect Roberto Perez Guerras. Back in August 2013, a Spanish newspaper El Pais wrote a report titled “InTempo, an incompetence of high stature” which alleged that sources told the paper that the building didn’t have an elevator shaft after the architectural plans were expanded from 20 stories to 47 stories: 

In January 2012, there was a new surprise: the elevator shaft had not been taken into account, as the promotional designs clearly show. "The space was calculated for a 20-story building," said the same sources. 

There were also allegations of workers being injured on the job and working without pay, according to El Pais, in addition to other hold ups and problems in the construction process.

The report was picked up by numerous news outlets at the time, with the New York Daily News extrapolating that there was no solution to the problem “because of the way the building was constructed, there is no space for a shaft anywhere.”

But speaking with architecture magazine Dezeen a few weeks later, the developer said that all media reports about the project were wrong:

Rafael Ballesta, sales manager for the Edificio Intempo residential towers, described the media storm as "ridiculous" and said: "We are constructing the highest residential skyscraper in Europe so how is it possible to build without elevators?"

Ballesta went on to tell DeZeen that the towers each featured six elevators. The InTempo Twitter page also defended that there were indeed elevators as well as elevator shafts and Spanish journalist Raquel López went to the site and rode in the elevator herself, posting pictures and context on her blog. 

The building was finished in March of 2014 with 120 of its 269 apartments sold at the time. According to the Latin Times, the price for a one-bedroom luxury apartment was as high as €358,000.

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NOW WATCH: Someone climbed the tallest building in China still under construction and the video is intense

Although fewer young people are getting married today than ever before, research suggests that getting and staying married is one of the best things you can do for yourself.

As the New York Times recently concluded, "being married makes people happier and more satisfied with their lives than those who remain single — particularly during the most stressful periods, like midlife crises."

If you wait until you're 23 to commit, you're less likely to get divorced.

A 2014 University of Pennsylvania study found that Americans who cohabitate or get married at age 18 have a 60% divorce rate. 

But people who waited until 23 to make either of those commitments had a divorce rate around 30%.

"All of the literature explained that the reason people who married younger were more likely to divorce was because they were not mature enough to pick appropriate partners," the Atlantic reports.

The 'in love' phase lasts about a year.

The honeymoon phase with its "high levels of passionate love" and "intense feelings of attraction and ecstasy, as well as an idealization of one's partner," doesn't last forever. 

According to a 2005 study by the University of Pavia in Italy, it lasts about a year. 

Eventually you realize that you're not one person.

Once you start living together, you realize that you have different priorities and tolerances — like, for instance, what does or doesn't consitute a mess. 

"People have to come to terms with the reality that 'we really are different people,'"says couples therapist Ellyn Bader. "'You are different from who I thought you were or wanted you to be. We have different ideas, different feelings, different interests.'"

It's a stressful — and necessary — evolution. 

Attraction relies on much more than your physical appearance. 

It's in the way you carry yourself, the people you hang out with, and how you talk to people — plus a whole lot more.

Be funny.

Multiplestudiesindicate that women are more attracted to men who can make them laugh. 

In one study, a psychologist asked men to tell a joke to their friends at a bar while a woman sat at a nearby table — and the guys who told jokes were three times as likely to get her number as the people who didn't.

"The effect of a great sense of humor on women's attractions might be partially explained by the fact that funny people are considered to be more social and more intelligent, things that women seek in a mate,"anthropologist Gil Greengross writes.

Surround yourself with friends.

A 2014 study from the University of California at San Diego found that people looked better when they were in a group. 

It's because our brains take the faces of a group of people in aggregate, making each face look more "average"— and attractive — as a result. 

"Having a few wingmen or wingwomen may indeed be a good dating strategy, particularly if their facial features complement and average out one's unattractive idiosyncrasies," authors Drew Walker and Edward Vul write.

Skip the small talk.

In a 1997 study, State University of New York psychologist Arthur Aron separated two groups of people and paired them off, giving each duo 45 minutes to answer a set of questions. 

One question set was small talk, and the other was increasingly probing. The people who asked deeper questions felt more connected — and one couple fell in love.

According to Harvard research, talking about yourself stimulates the same brain regions as sex or a good meal. 

"Activation of this system when discussing the self suggests that self-disclosure ... may be inherently pleasurable," Scientific American reports. 

Life is good for Evan Spiegel.

Snapchat is reportedly about to receive a $200 million investment from ecommerce giant Alibaba. It's also in the process of raising another round of funding that would place their valuation at $19 billion.

And with a net worth of $1.5 billion, the 24-year-old CEO is officially the youngest billionaire in the world, according to Forbes.

Spiegel lives a charmed life — and he knows it.

"I am a young, white, educated male," he once said at a conference. "I got really, really lucky. And life isn't fair."

We've pulled the highlights from profiles by LA Weekly, Business Insider, and more.

Spiegel grew up in the Pacific Palisades, a ritzy Los Angeles enclave just east of Malibu. He was the oldest son of two lawyers, though his parents divorced when he was in high school.

When Spiegel turned 16 and got his driver's license, he was given a 2006 Cadillac Escalade, which he parked in the gated Southern California Edison parking lot next to his school. Spiegel's father represented Edison during the energy crisis.

The high schooler wanted a more fuel-efficient car since he found himself driving in the city fairly often. In a letter from 2008, Spiegel asked his parents to lease him a BMW 550i, which retails for about $75,000. "Cars bring me sheer joy," he wrote. "I would really appreciate you validating me and all of my hard work by leasing the BMW."

New York City is a historic place, and like any historic place it has its secrets. Photographer Will Ellis know this better than most.

Ellis is an urban explorer, one of many who seek out and investigate abandoned and usually off-limits buildings and structures.

Often these places exist right in our everyday environments without us even knowing they're there.

He's been photographing abandoned spaces in and around New York City for years, documenting these hidden artifacts of bygone times.

His work has been compiled into a book, which is available for purchase here.

Ellis shared some exclusive images with us and talked about his experiences exploring New York's most intriguing hidden ruins.

Ellis says he first discovered the thrill of urban exploration when he entered an abandoned building in the Brooklyn neighborhood of Red Hook on a whim. "What stuck with me was that sense of discovery and adventure," he tells Business Insider.

"For the next few weeks and months I was heading out to new locations every chance I got," he says.

At first, Ellis says, he was interested about the visual aspect of the buildings and explored in order to get great photographs. Soon, though, he starting wondering about the history and stories behind the structures he was shooting, so he began to do research.

You don't need to go to Dublin for a true Irish pub experience; it's likely there's already an authentic pub right in your neighborhood. You just need to know where to look.

With St. Patrick's Day coming up, we found the best Irish pubs in 19 big cities around the US, according to Yelp, with the best drinks, the best food, and the best craic (that's Gaelic for "good times").

ATLANTA: Brick Store Pub

125 East Court Sq., Decatur

When three friends searched for a neighborhood pub that poured a great pint and couldn't find one, they decided to open their own. The Brick Store Pub rotates 22 draft beers, and offers another 75 in bottles. The upstairs is devoted exclusively to Belgian beers.

On Saint Patrick's Day the pub will have live music, special beers, and "food features" available for customers.

AUSTIN: Draught House Pub & Brewery

4112 Medical Pkwy.

The Austin, Texas, beer scene is buzzing, and a lot of the action happens at Draught House. With more than 70 beers on draft, many from Texan breweries, Draught House also offers a few home brews of its own.

The food is solid, too — not made in house, but from pub-curated food trucks that park outside ready to serve the regulars.

BALTIMORE: Mick O'Shea's

328 North Charles St.

Mick O'Shea's happily mixes its Irish heritage with a liberal sprinkling of Baltimore pride. Regulars rave about the happy hour deals, as well as the local Maryland crab soup.

On St. Paddy's Day grab yourself a traditional Irish breakfast, starting at 9 a.m., and then come back at 5 p.m. for live music.

Google tackles so many different things all at once that at times it's hard to keep track or even fully comprehend it. 

A Quora user posed a straightforward question: What are some mind-blowing facts about Google?

We've plucked out our favorite facts from that list and other sources to bring you this selection of surprising tidbits.

(Dylan Love contributed to an earlier version of this post.) 

Google takes over 200 factors into account before delivering you the best results to any query in a fraction of a second.

The company owns a bunch of domains that are common misspellings of Google, like Gooogle.com, Gogle.com, Googlr.com, and more. Google also owns 466453.com, too ...

In 1998, the year Google launched, users were making about 500,000 searches per day. Now, there are more than 2 million Google searches per second.

Source.