How five of the world's most expensive salt and spices are made

Explaining why salt should be used to season food early in the cooking process

Experiments involving the same dishes, with salt added at the start of cooking versus at the end, have been shown to yield drastically different taste outcomes because salt takes time to diffuse into foods, particularly vegetables, whose cells are surrounded by cellular membranes and walls. Salting at the end will produce a concentrated surface coating, rather than even seasoning.

Why caviar is still so expensive, even though it's no longer rare

An ounce of caviar can cost more than $250, even though China has flooded the market with a surge in supply over the past decade. As it turns out, the perception of caviar as a luxury good rather than a true scarcity is part of what keeps it so expensive.

The most unique-smelling places on Earth

Have you ever picked a travel destination by smell? This Atlas Obscura piece cultivates a list of the most distinct-smelling spots in the world. Learn about these obscure scents to potentially book a trip to a spring that smells like rotten eggs, or a desert valley filled with frankincense trees.

Salt is harvested from briny ocean water and underground deposits

Mostly sodium chloride, this compound is produced for human use by collecting seawater in shallow pans and allowing the Sun to evaporate the water until crystals remain. Underground rock salt is mined, crushed, and purified from deposits left behind by ancient seas that have dried-up.

View the most expensive materials on Earth, led by those forged in particle accelerators

Californium-252—valued at $27.8M per gram, as of 2025—is far rarer and more valuable than gold, silver, or diamonds due to production and transportation costs. The most expensive substance ever found or created is antimatter, costing approximately $62.5T per gram.

The five most common chemicals found in modern food

Most modern processed foods rely on a number of preservatives to stay fresh from production to our plates. The most common include citric acid (preservative and flavor), sodium benzoate (preservative), xanthan gum (thickening and stabilizing), carrageenan (thickening), and red dyes 3 and 4 (for color).

Some people in Italy enjoy a cheese with live maggots in it

From squeaky Wisconsin cheese curds to the squirmy Sardinian casu marzu, cheese around the globe comes in myriad forms. Exploring the work of seven cheesemakers in seven countries, this video shows each cheese has traditions and flavors unique to its part of the world.

See how fireworks are made and which metals are responsible for different colors

This roughly five-minute video breaks down details about how pyrotechnicians make fireworks, including that magnesium is responsible for white fireworks, copper salts for blue, and charcoal for orange.

How chefs suspend liquid in edible pearls resembling caviar to introduce a new texture to fluids

Through spherification, drops of a solution of sodium alginate and a flavored liquid are placed in a calcium lactate solution, which forms a chemical skin around them. This is because calcium replaces the sodium in the alginate chains, forming a gel around each drop's liquid interior.

The science (and scams) behind essential oils

Essential oils are a big business, with industry estimates pegging its market size at $10B last year—a number expected to double by 2030. These distilled plant compounds have a long history of both legitimate and exaggerated uses, and many marketed oils are, as the author of this long read claims, just selling wish fulfillment. Revisit some of the history and contemporary use of essential oils with this piece.

Gold has no nutritional value or flavor—but edible gold is still popular

Gold is a pretty expensive topping. Nonetheless, luxury menus around the world are offering food staples—think bagels, chocolate, and burgers—wrapped or dusted with gold. What's the deal with this fascination?

Turning some invasive species into cash crops has helped control their spread

In Mexico, some companies are transforming sargassum seaweed blooms into paper, bricks, and shoes, while in Cambodia, water hyacinths are dried and woven into baskets, rugs, and other crafts. Lionfish and green crabs have been hunted for culinary dishes, with the latter also being used to make crab whiskey in New England.

The surprising economics of sushi

How exactly does a patron of a sushi restaurant in Omaha, Nebraska, get to eat fresh fish caught off the coast of Japan? This episode of the Freakonomics podcast answers this question and explains the impressive feat. Listen to learn about the tricky economics and time-sensitive process behind importing fresh catches to sushi-lovers across America.

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

How tea gets made

Tea is one of the most consumed beverages in the world, and this video walks us through the process of supplying it from farms to our mugs. Workers handpick leaves, ferment them, and dry them as part of this involved operation. Follow along for a scientific understanding of the many steps it takes to produce tea and appreciate the detail and effort to create its flavor, aroma, and color.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Hear how Advent calendars have become a pricy branding tool

Advent calendars have shifted into a high-margin branding vehicle, with retailers prioritizing elaborate design and reusable packaging. This episode questions whether premium calendars—despite their rising prices, environmental concerns, and flashy marketing—actually deliver products worth the cost.

Visualizing the world's food supply chains

The world's food supply chain is complex and lopsided, with much of the world's nutrient-rich food ending up in Europe and North America. This visualization illustrates the paths our food takes around the world, from starchy vegetables in...

The microplane zester, mortar and pestle, and other underrated kitchen tools

Eight chefs weigh in on the most helpful culinary tools they often don't see in people's kitchens. The very specific fish fork, for example, not only delicately moves fragile filets but can double as an olive or soft cheese server.

A brief guide to espionage

Spies have one of the most challenging and dangerous jobs in the world, risking their lives and legacy to extract secrets in the interest of their country. This in-depth explainer breaks down one of the profession's oft-ignored aspects: The...

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

A delicious flavor used to be made from a beaver’s butt

Love vanilla-flavored foods? Well, it was once made from castoreum - a yellowish exudate from the castor sacs of mature beavers. And the FDA regards castoreum as “natural flavoring."

Explore 25 of the world's richest universities beyond the US

This article from The College Post highlights 25 of the wealthiest universities outside the United States. It showcases institutions like King Abdullah University of Science and Technology (KAUST), the University of Oxford, and the University of Hong Kong. Learn more about the global landscape of higher education funding.

Cocainenomics

How did Pablo Escobar rise up out of the Medellin barrios to become the CEO of a $4 billion business? This immersive look at the global drug trade spawned by the notorious drug lord, who at his peak controlled 80% of the cocaine supply in the US. This deep dive includes visualizations showing how logistics of drug smuggling evolved over the years and traces the economic impact of the industry.

Dollar stores often place staple items at the back of the store

This forces customers to encounter other, less-necessary items on their way there, leading to impulse buys. This video explains other ways that dollar stores make money while selling extremely cheap products, keeping dollar store profit margins relatively high.

The 'commodities' investment category includes livestock, oil, wheat, and more

Commodities traders look at all of these things as assets, placing short-, medium-, and long-term wagers on how much each is really worth. Commodities are valuable in part due to how essential they are in creating most of the world's marketable goods.

The life of a pistachio

Pistachios—which are actually a seed, not a nut—are a superfood with lots of great fat, fiber, antioxidants, and more, and is listed as a complete protein. Originally from the Middle East, the seed was imported to the US where California has become the leading grower in the world. Harvested once a year around October, the flavor is having a bit of a moment both for its taste and nutrition. Watch more here.

Five happy hour stories from around the world

If you need some fun facts to make conversation at your next office happy hour, look no further than this video. It includes five stories about pub life, from a look inside a company that turns tap handles into works of art to a search for the oldest pub in the world.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

Poison ivy is in the same family as mangoes, cashews, and pistachios—and they all produce oily urushiol in their raw, unprocessed state—but they are typically prepared in ways to avoid causing human discomfort.

Read a deep dive on the 'all-purpose healing' peptide BPC-157.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

The boiling temperature of water decreases with increasing elevation because the molecules need less energy to overcome the lower atmospheric pressure associated with thinner air.

Explore the history, structure, and species of Australia's Great Barrier Reef with this interactive journey narrated by Sir David Attenborough.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by more than 1.5 million Muslims each year.

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company, including its unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.

In 1945, Surrealist artist Salvador Dalí and legendary animator Walt Disney began collaborating on a short film that was not completed until 2003, years after both men had died.

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks

Explore a list of the 100 best novels of all time, compiled by some of the world's best living writers, including Salman Rushdie, Stephen King, and Jennifer Egan.

Lesser-known phobias include turophobia, or the fear of cheese, and nomophobia, the fear of being without your cell phone.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.