Across China’s Zhangjiajie Grand Canyon, 980 feet above the floor of the deep, tree-lined chasm, stretches a terrifying new glass-bottomed bridge.

The Zhangjiajie Grand Canyon Glass Bridge opened to the public on August 20th in the Hunan Province, and is now the tallest and longest glass bridge ever built. The walkway is more than 1400 feet long and 6 feet wide, and can accommodate 800 visitors at a time.

Designed by Israeli Architect Haim Dotam, the bridge’s floor is made of 99 panels of multilayered glass, allowing those who dare to cross the chance to see just how far above the ground they stand.

“The Zhangjiajie Glass Bridge was designed to be invisible as possible — a white bridge disappearing into the clouds,” Dotam said in a statement.

According to China’s CCTV, the bridge cost $3.4 million to build. It was originally slated to open earlier this summer, but the date was pushed back to allow for more rigorous safety inspections.

In June, volunteers were invited to try to smash the glass panels with sledgehammers to demonstrate their strength and durability. Officials also drove a car across the bridge during the test ceremony.

The Zhangjiajie Bridge is the latest — and perhaps most impressive — in a series of glass walkways that have been constructed in China over the past couple of years. Earlier this summer, an 88-story glass skywalk debuted on the outside of Shanghai’s Jin Mao Tower, offering similar thrills.

In September 2015, the Brave Man’s Bridge opened in Shiniuzhai National Geologic Park, also in the Hunan province. A glass walkway built into the side of the Henan province’s Yuntai Mountain debuted the same month, reaching a height of 3,500 feet in certain places. But a little over two weeks after it opened, cracks appeared on one layer of a glass panel, prompting the skywalk to close temporarily, according to CBS News. The extra safety tests on the Zhangjiajie Bridge were conducted to avoid a similar problem.

Though the Zhangjiajie Bridge is now open to the public, construction is not entirely finished. By June 2017, courageous tourists will also be able to go bungee jumping off the side, in what will likely be the world’s highest bungee jump. Three enormous swings are also expected to dangle from the bridge, the biggest of which could be 500 feet long.

So if the thrill of crossing the world’s highest glass bridge doesn’t get your heart pumping, just wait until next summer.

SEE ALSO: Watch someone take a sledgehammer to the world's highest and longest glass bridge

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How much does it take to buy a home?

Mortgage site HSH.com has updated its estimate of how much annual income a household would need to buy a home in major metropolitan areas in the US, according to second-quarter 2016 data.

In Q2, mortgage rates fell across the board, while list prices in major metros such as Chicago and San Francisco increased dramatically — 18% and 15%, respectively.

HSH.com looked at median home prices from the National Association of Realtors. It took into account interest rates for common 30-year fixed-rate mortgages and property taxes and insurance costs to figure out how much money it would take to pay a median-priced home's mortgage, taxes, and insurance in each city, and how much you'd have to earn to afford it.

HSH.com emphasizes that this is only the base cost of owning a home, without taking into account maintenance and other incidentals.

The site also calculated how it would change the salary needed to buy a home if a buyer were to put 10% down instead of the recommended 20%. No matter where you are, putting down less makes things more expensive — you can visit HSH.com to see both numbers.

Salaries are listed from lowest to highest needed and are rounded to the nearest $500.

SEE ALSO: Here's how much you need to earn to live comfortably in 15 major US cities while still saving money

19. San Antonio

Population: 1,409,000

Median home price: $210,500

Monthly mortgage payment: $1,137

Salary needed to buy: $47,000

18. Orlando

Population: 255,483

Median home price: $223,000

Monthly mortgage payment: $1,152

Salary needed to buy: $49,500

17. Minneapolis

Population: 407,207

Median home price: $242,400

Monthly mortgage payment: $1,208

Salary needed to buy: $52,000

For the 1964 World's Fair, over 51 million people came to the massive New York State Pavilion in Queens, New York. The structure was custom-built for the Fair, where companies from all over the world showcased their budding advances in technology and transportation.

In the decades that followed, the Pavilion was abandoned and vandalized. Now the city hopes to restore it to its former glory.

To imagine what a revitalized Pavilion might look like, the nonprofits National Trust for Historic Preservation and People for the Pavilion launched a competition, asking designers from all over the world for ideas.

Out of more than 250 submissions, Washington-based designers Aidan Doyle and Sarah Wan's "Hanging Meadow" won first place. It imagines the Pavilion as a lush, suspended garden. Inside, there would be a public park and pathways for people to explore.The concrete columns would support the giant, enclosed garden, which would prioritize native plants. Looking out from the pathways, visitors would have a view of the city while standing amongst the plants, Doyle and Wan write.

The goal of the competition is to both raise interest and funds for the Pavilion's restoration, Stephanie Meeks, CEO of the National Trust for Historic Preservation, tells Business Insider. 

A complete restoration would cost NYC an estimated $53 million, according to a Parks Department report from 2013. Queens Borough President Melinda Katz has already raised over $10 million for the restoration project, though there is no exact timeline for its construction. There's no word yet if the Hanging Meadows design will be used even if the city raises enough money.

Whether the design is realized or not, those fighting for the renovation hope that the '64 World Fair's sense of optimistic wonder is preserved.

The Fair and Pavilion "represent a hopeful era in America when people looked to the moon landing, the potential of computers, and the arrival of the Ford Mustang as thrilling ... moments," Meeks says. "It is a symbol of hope and the potential for creativity in civic life for future generations."

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We can no longer be silent.

Presidential fashion is a low bar. It's almost expected that the leader of the free world wear a somewhat boxy, boring suit in navy, black, or the occasional gray (unless you're Obama doing summer). Then you throw on a power tie in red or blue.

This is fine. The American people understand the president has more important things to do than worry about his haberdashery.

So we're not asking a lot here. Donald Trump, however, consistently fails to reach this low bar because of one tragic mistake — the way he wears his ties.

"He's no worse dressed than any of the others, because they are all on par with one another. His biggest mistake (besides the tan and hair) is the length of his tie," said Jessica Cadmus, a personal stylist known as The Wardrobe Whisperer.

"It's ludicrous, and no one is pointing it out. It's egregiously long," Cadmus said. "My guess is that he buys Italian ties (which often are longer because Italians like to tie up a big knot) but then he ties a regular knot — probably a half Windsor."

A full Windsor, we should note, is the most common knot among the Wall Street set. According to Cadmus, "chumps tie a half Windsor." They usually indicate that you are wearing a forward-point collar, and Wall Streeters tend to wear a spread collar.

The length of Trump's tie makes it look as if there's a long, silk (good God, we hope it's silk) leash hanging from his neck. That is why too-long ties are often used for comic effect, and unless your name is Krusty and you work at the Big Top, they are generally frowned upon in the workplace.

Too-short ties are no better.

At its shortest, a man's tie should rest on the top of his belt. At its longest, it should end at the bottom of the belt. Ideally, though, a tie should hang somewhere in between the two.

You can note the difference in Trump's picture with one of vice presidential candidate Mike Pence at the top of this post. There are a number of reasons why Pence looks so uncomfortable, but we're choosing to believe that he's making an excruciating effort to avert his eyes from his running mate's neckwear.

"Another pro tip is that guys 6-foot-2 and taller should purchase extra-long-length ties. Trump claims to be 6-foot-2, but I'm not sure I believe it based on how long his ties are," Cadmus told Business Insider.

Yet another mystery, people.

One more thing: Cadmus' musing on why Trump's ties look so atrocious begs one question — if Trump is wearing Italian ties, does that mean he's not wearing his own Chinese-made Trump ties?

Unclear.

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Dig Inn— the Manhattan-born chain known for organic meals at affordable prices — will soon buy its own farm and hire its own farmers. 

By October 2016, the popular farm-to-counter chain will open a 50-acre organic farm near Hudson, New York, CEO Adam Eskin tells Business Insider. The company is still settling on an exact location, but it will be a quick train ride from Manhattan.

There are upscale restaurants, like The French Laundry and Blue Hill, that have their own farms. Dig Inn is aiming to do the same as a chain, but its prices will remain low (ranging from $7 to $10).

Only a small percentage of the farm's crops will end up at its restaurants, Eskin says. The larger goal of the farm is, instead, to learn exactly how things grow — similar to a lab. 

Dig Inn's farmers will experiment with different organic farming methods, seed varieties, and crop rotations, Taylor Lanzet, Dig Inn's sustainability manager, tells BI. The farm will harvest both staples, like apples and plums, and what she calls "forgotten veggies" — varieties of squash, kale, and onion that were "left out of modern agriculture." Some of these items are already on Dig Inn's menu, but Lanzet says customers can expect to find an even greater variety of veggies in the future. 

The company is searching for a farmer to spearhead the farm, an assistant manager, and three to four other farmers to work the land. Its existing servers will also periodically visit and work on the farm, Eskin says.

Since its launch in 2011, Dig Inn has opened 11 New York locations and one in Boston. The chain will open six to eight New York and Massachusetts restaurants by 2018, and build in a third state soon after.

The ultimate goal of the farm, Eskin says, is to figure out how Dig Inn can get the highest quality crops while preserving affordable prices.

Dig Inn is able to keep prices low, Eskin says, because it plans its menu around what's in-season, sometimes buys blemished — though still fresh — produce at a cheaper rate, and experiments with different items at every location. The chain's strong relationships with partnering farmers also helps. 

Dig Inn has been working with farmers and visiting its partner farms for years, but Eskin says it's not enough.

"A visit for a day gives you somewhat of a sense [of how to farm sustainably], but it doesn't give you a full sense of the challenges and burdens of producing food in a real way," Eskin says. "We want to have a holistic view of sustainable food."

To that end, Dig Inn wants its chefs and servers to get the farm experience. They'll periodically spend time working the fields, Eskin says.

"Their days might not always start with going to the cooler [to get ingredients]," Eskin says. "It might start with going to get the seeds."

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America does plenty of things well, but paid parental leave isn't one of them.

Out of the world's 196 countries, the US is one of only four that has no federally mandated policy to give new parents paid time off. That burden is placed on individual states and employers.

But some countries really prioritize the well-being of new parents — both straight and same-sex — granting them more than a year of leave at full pay.

If you're thinking of starting a family, here are the ideal places to call home.

SEE ALSO: 19 companies that offer some of the best parental leave policies in America

Finland

Expecting mothers in Finland can start their maternity leave seven weeks before their estimated due date.

After that the government covers 16 additional weeks of paid leave through a maternity grant, regardless of whether the mother is a student, unemployed, or self-employed. The country also offers eight weeks of paid paternity leave.

After a child turns three, parents can also take partial care leave, in which they split time between home and work. That lasts until the child starts second grade.

Denmark

New moms in Denmark get a total of 18 weeks of maternity leave: four weeks before the birth and 14 weeks after, all at full pay. During the 14-week period, the father can also take two consecutive weeks off.

From that point on, parents can split 32 additional weeks of leave however they see fit. They can extend the leave for another 14 weeks if the child or parent gets sick. By law, the government covers 52 weeks of pay, though not always at the full salary. 

Sweden

New parents in Sweden are entitled to 480 days of leave at 80% of their normal pay. That's on top of the 18 weeks reserved just for mothers, after which the parents can split up the time however they choose. 

Sweden is unique in that dads also get 90 paid paternity days reserved just for them. The idea is to promote bonding between father and child during a time when moms are getting most of the attention.

The former Wappenbury, England, estate of Sir William Lyons — who cofounded Jaguar Cars with William Walmsley in 1922 — is up for sale for $9.8 million.

Lyons died in 1985, and although its current owners, Godfrey and Marie Hall, didn't buy the property until 2007, they recently told the Wall Street Journal, "The layout of the house is exactly the same as when Sir William had it, as it was in very good condition when we bought it. All we've done is upgrade some of the fittings and put in new bathroom suites." 

Let's take a look inside the 329-acre estate, which has luxurious carpeting, decadent drapes, and dark wood paneling. 

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The property, measuring at 329.47 acres, is made up of five different lots only half an hour from the Jaguar factory. Lyons would have every prototype delivered to the house so that he could get his wife Greta's final opinion before production.

A swimming pool, two tennis courts, formal gardens, and green houses surround the home.

The 12,195-square-foot country house dates back to late Victorian era.

Summer can be a challenging time to dress professionally while staying cool. If you can't avoid wearing dress shirts, then make sure that you are rolling your shirtsleeves up properly.

We created this simple visual guide so you'll never look sloppy with rolled sleeves:

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I love tacos, but I'm also a horrible taco snob. I only like mine served off a truck in a parking lot in Los Angeles. I want them to be small, tasty, and very, very cheap. 

I spent the better part of a decade eating off taco trucks in LA, and in 2007, I found MY truck: Tacos La Estrella, always parked at a gas station on Colorado Boulevard in LA's Eagle Rock neighborhood, northeast of Downtown.

Then I moved back to New York. "You will never have good tacos again," people warned me, ominously. Yes, when I lived in NYC a decade earlier, it was a Mexican-food wasteland. But surely, with the whole food-truck revolution, that had changed?

Nope. Every purported "taco" truck I tried was a massive fail. Tacos too big. Tacos too busy (Lettuce? Shredded cheese? Sloshings of guacamole?). Tacos uncheap. A great taco is less than $2. Period. It's usually significantly less.

Every purveyor I tried — and I got away from the trucks after a while — botched the job. New York taco-makers seemed to think that a simple little piece of street food, made from unwanted cuts of meat and rendered delicious through ingenuity and an obsession with freshness, had to be improved. More meat. Fancier preparations. Ungodly sauces.

Great tacos are an art form, every bit as exacting in the details as great sushi, but at a much, much lower price. They are street art. And this art was long ago perfected in Southern California. It should be copied, not modified.

Thankfully, after a year and half of suffering, I got back to LA for the Los Angeles auto show last year. I went straight to the parking lot, fingers crossed that my beloved truck would be there.

It was:

SEE ALSO: The 20 best US cities to live in if you love to try new food

It was a gorgeous, sunny day in Eagle Rock.

I headed for the gas station where I used to get my cars smog-checked.

OK, I wasn't getting this car smogged. It was a $400,000 McLaren 675LT supercar that I borrowed for a few days. But what's that in the background?

Here's the review of the car.

When's the last time you looked at a food's nutrition label before you downed its contents?

More importantly, did the mishmash of black-and-white numbers, letters, and scientific lingo mean anything to you?

If the answer is "never" and "no," you're not alone.

Nutrition labels, which haven't been updated since 1994, are notoriously confusing. But if you're looking to lose weight, the information they include — from calories to sugar, fat, and protein — is important. 

Instead of trying to break it all down for consumers, Weight Watchers made up its own system instead.

That's what that tiny blue icon in the corner of many packaged foods refers to. It tells you how many points a food has based on four key things you'll find on a standard nutrition label: calories, fat, sugar, and protein. You don't have to worry about the rest, like the oft-ignored part where it says "standard serving size."

What the heck is a 'standard serving size'?

In FDA parlance, the "standard serving size" section towards the top of any nutrition label refers to something called a "reference amount customarily consumed per eating occasion," or the amount of a food that the average person would typically eat in one sitting. The problem with this is that people tend to eat far more than the amount specified on the label. For reference, a "standard serving size" of Oreo cookies is two cookies. That's right, two.

In an interview last year, Marion Nestle, New York University professor of food science and author of the book "Food Politics," told Business Insider that this section is one of the biggest problems with current food labels, since it's "completely out of line with what people actually eat." An FDA-sanctioned "serving size" of ice cream, Nestle pointed out, is just half a cup.

"Who sits down with a container of ice cream and measures out a half of a cup? No one. You're eating a cup or a bowl of ice cream," said Nestle.

In response to these and other concerns, the FDA announced its first major overhaul of nutrition information in May, which goes into effect in 2018. But even the new designs, which increase the serving size and include a line for "added sugars" leave a lot of room for improvement, Nestle wrote on her "Food Politics" blog.

Scrapping calories, serving sizes, and fat for points

Rather than trying to explain nutrition labels to its customers, Weight Watchers came up with their own system for easily evaluating the nutritional makeup of foods. It's called the points system.

Although its exact name and calculation system has changed several times since it was first introduced in 1997, the gist remains the same. With the point system, every food you eat is allotted a certain number of points based on its sugar, fat, protein, and calorie content. As part of the program, you're assigned a daily and a weekly points goal based on your current weight and how much you want to lose. Nutritious, filling foods get fewer points while junk foods with empty calories get more. Fruits and veggies are zero-point foods.

"We're solving for the complexity of the nutrition label," Dr. Gary Foster, Weight Watchers' chief scientific officer and a professor of psychology at the Perelman School of Medicine at the University of Pennsylvania, told Business Insider.

Dozens of other weight loss apps and programs now use various versions of point systems to try and help you lose weight. Unlike Weight Watchers, however, which has been around for decades and benefits from having thousands of participants, most of these programs haven't been rigorously studied.

Does it work?

The short answer is yes, Weight Watchers works. Several comprehensive, large-scale studies suggest the program can help some people lose weight and keep it off. When researchers compare weight loss programs, Weight Watchers is often among those recommended as effective.

A randomized controlled trial funded by Weight Watchers and published in the American Journal of Medicine in 2013, for example, showed that people in the study who used Weight Watchers lost more weight than a comparison group of people who tried to shed pounds on their own. For a 2008 study in the British Journal of Nutrition, researchers (including one from Weight Watchers) studied more than 600 Weight Watchers participants and followed up with them one year, two years, and five years after they completed the program. A year after they'd finished the program, close to 60% were still within 5 pounds of their goal weight. At two years, 45% were still in this category, and at five years 37% were.

Still, research suggests that there's more to the program than just its points system. Its meetings, app, and other online tools appear to help people lose weight too.

That Weight Watchers-sponsored study from 2013, for example, found that people who tried to count points on their own without making use of other parts of the program — like attending its meetings or using its app — didn't lose as much weight as people who participated in all of them, although certainly that's the outcome the company might have been hoping for.

But, if you're trying to lose weight and you've been struggling with nutrition labels, the key takeaway is this: You're not alone! Nutrition is complicated, and fortunately there are tools that can help. Evaluating foods with a point system is just one of them.

SEE ALSO: Here's what a serving size of each of your favorite foods looks like

DON'T MISS: 9 important foods you should be eating but aren't

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On September 12th, 1962, President Kennedy gave an impassioned speech defending the country's decision to devote resources towards a moon mission. Over 50 years later, that speech is just as motivating as it was the day he delivered it at Rice University.

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Usain Bolt just won three gold medals at the Olympics. He also does pretty well for himself, earning $32.5 million in the year before the Olympics. See how he makes and spends all of that cash.

Produced by Jacqui Frank. Original reporting by Will Heilpern.

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The Aston Martin unveiled the stunning new Vanquish Zagato Volante at the 2016 Monterey Car Week on Friday. The stunning drop top is a companion model to the Vanquish Zagato Coupe the company introduced in May at the Concorso d'Eleganza Villa d'Este on shores of Lake Como in Italy.

It's the latest in a long line of dazzling collaborations between Aston Martin and storied Italian design house Zagato. 

"The Vanquish Zagato Volante illustrates the ways in which Aston Martin design can evolve in collaboration with such a trusted and long-standing partner," Aston Martin design boss Marek Reichman said in a statement.

"Vanquish Zagato Volante continues Aston Martin's new century of innovation and creativity, strengthening the association between these great automotive marques in the process."

The Vaquish Zagato Volante is based on Aston Martin's flagship Vanquish super-GT car. 

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The Vanquish Zagato Coupe and Volante marks the fifth collaboration between Aston and the Milanese design firm dating back to 1960 and the first since 2011's V12 Vantage Zagato.

According to Aston, the decision to put the Zagato Volante into production was made after receiving what the company calls overwhelming customer interest for the Coupe. Unfortunately, just 99 Zagato Volantes will be built and all are expected to be sold this week.

Even though the Vanquish Zagato Volante's looks are undeniably Aston Martin, the Zagato design DNA is still present. The rounded edges and curved body panels are standard Zagato design features.

Everyone knows the big-name landmarks in the UK, but there's so much more to the country than Big Ben and Stonehenge.

Did you know that the UK is home to the world's longest hedge maze and a picturesque island where there's a ban on cars? Probably not.

We have compiled a list of lesser-known yet magnificent places and sites that are worth visiting in the country.

Here are our top 30:

30. Go on a hike in the Peak District to see this Black Clough Beck, a small but beautiful waterfall.

29. Walk amid the stunning ruins of Holyrood Abbey, which was built in 1128, in Edinburgh.

28. Pick up a bunch of flowers at the incredible Columbia Road flower market — open every Sunday — in the London borough of Tower Hamlets.

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If you ever plan to take a trip to Stockholm, Sweden's capital city, take note of the subways: they're works of art in and of themselves.

The stations are hewn into the bedrock in a way that makes them feel organic. At the same time, the layers of paint and murals add man-made, artistic touches. It's a fantastic juxtaposition between rugged and ultra-refined.

Here's a look at some of the city's amazing, cave-like subway stations:

SEE ALSO: The 17 most beautiful metro stations around the world

This metro station at Fridhemsplan shows how rough and cave-like some of the stations in Stockholm can appear.

But you can see the man-made elements at many stations. The Rådhuset station features concrete columns that fit with the aesthetic of the courthouse above the station.

Note the roughly carved, ochre-colored arc, juxtaposed with the perfectly smoothed concrete that supports the ceilings.

Only roughly 30,000 people get the chance to visit Antarctica each year. The continent is treacherous and expensive to reach, and there are only a couple of months at the end of the year when visiting is really feasible. Even fewer people venture to the interior part of Antarctica. Most people who visit the continent cruise from South America to the Antarctic Peninsula and rarely venture inland from the coast. 

With that in mind, in 2006 Robyn and Patrick Woodhead created White Desert, billing it as Antarctica's only "luxury camp" and outfitting it with comfortable furnishings and top-notch dining. White Desert offers adventurous travelers the chance to participate in two different trips to other parts of Antarctica — one to Atka Bay and the other to the Geographic South Pole.

The tours cost a whopping €64,000 ($72,000) per person, which includes housing, flights, and food, and take place only in November and December, the warmest time of the year in Antarctica. According to USA Today, the average high temperature is -36 degrees Fahrenheit in November and -16 in December. The average low is -40 degrees Fahrenheit in November and -20 in December. 

White Desert recently underwent a renovation in honor of its 10th anniversary. The team shared photos of the camp's new look so we can see what it's really like to visit Antarctica's interior in style.

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Guests arrive at the camp after a 5.5-hour flight from Cape Town on an Iluyshin 76 jet. They land at what's officially known as Unknown International Airport.

The camp is made up of six sleeping pods that can accommodate two people each.

When they're not embarking on their trip to the South Pole, guests can relax in style. Each tent is heated and has two beds that can be partitioned.

We've all been there. Sometimes there's no other way but to re-wear stinky underwear because you skipped laundry day or ran out of fresh pairs during a trip. Now, you might not have to feel so shameful to wear the same underwear you wore the day before. Y Athletics says they've developed an underwear that has advanced odor-resistant qualities, so it can be worn several times without getting stinky.

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Every year, over 65,000 people gather for Burning Man, the wild, weeklong festival in the middle of Nevada's Black Rock Desert. Since Burning Man began in 1986, its ever-growing number of participants have abided by its founding principles, which include "radical self-reliance," "radical self-expression," and "leave no trace."

As part of the festivities, teams of artists work together to build huge, intricate temples from reclaimed wood. At the end of the week, as part of Burning Man's "leave no trace" rule, they set them ablaze. 

Sculptor David Best and his crew started this tradition in 2000, designing the temples until 2007 and again in 2014. Since then, other architects and artists have made their own creations. At this year's Burning Man, which starts August 28, Best will return to build a new temple.

Check out some of the most incredible temples that have been created over the years — before they were burned down.

SEE ALSO: 20 of the most incredible works of Burning Man art ever made

The Temple of Tears by David Best and Temple Crew (2001)

Temple of Stars by David Best and the Temple Crew (2004)

Basura Sagrada by Shrine Tucker and the Basura Sagrada Collaboratory (2008)

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