Iceberg lettuce was introduced to the world in the 19th century by a Pennsylvania seed company and became popular thanks to its durability.

A World War I discovery about blocking ethylene, a plant hormone, now helps preserve our fruits

Listen to this in-depth podcast episode about discoveries that enabled fruits and vegetables to be preserved and appear fresh for months or longer and other scientific insights, including why iceberg lettuce was the salad staple people ate for most of the 20th century.

Frozen burritos made the dish widely available in the 1950s

California native Duane Roberts, who also pioneered the frozen hamburger patty, invented the frozen burrito in 1956 to be easily prepared at fast food restaurants. This innovation also allowed it to be sold in supermarkets.

Why pickles became a thing

Pickles began in Mesopotamia around 2400 BCE as a way to preserve vegetables amid heat (and spoilage). They spread through Egypt, Greece, and Rome, where Julius Caesar reportedly fed pickles to his soldiers, and brining was treated as a culinary art. The technique is broadly useful, as salt and water can extend the shelf life and deepen flavor for almost anything.

The history of the Caesar salad

Despite what you might guess from its name, the Caesar salad wasn't invented in ancient Rome. The popular dish was created in the 1920s by two Italian brothers who'd emigrated to the United States and opened a popular restaurant in Tijuana called Caesar's Palace. This history of the popular entrée digs into that history and unpacks how it became a restaurant staple.

Budweiser pioneered refrigerated rail transport for its beer in the 1870s

This enabled Budweiser to achieve national distribution long before competitors, fundamentally transforming the US beer industry. It was also among the earliest large-scale adopters to use pasteurization, allowing it to be shipped long distances without going bad.

In the 19th century, ice-cream-related illnesses were somewhat regular in America

Ice cream was a popular dessert, but it was also a dangerous one, with numerous reports of vomiting, diarrhea, and—in some cases—death. Historians argue this was likely due to vendors' poor hygienic practices.

Health food broke into the mainstream by the 1980s

A 1984 New York Times story noted that Americans were eating less red meat than a decade prior, and that, in general, the country was “talking, thinking and worrying about what they eat to a degree unique in the nation's history.” The feature then details foods that were then considered bizarre: whole-grain muffins, hummus, and a variety of vegetarian dishes. (Some readers may experience a paywall.)

A weed from the mustard family facilitated the molecular era of botany

The small genome and rapid growth cycle of Arabidopsis thaliana have made it an ideal organism for genetic studies, with over 100,000 research papers exploring topics such as disease resistance, stress tolerance, and response to light. The first studies were done on plants that grew from seeds saved during the Hungarian Uprising of 1956.

The unexpected origin story of the snow globe

In 1900, a Vienna tradesman named Erwin Perzy I was attempting to invent an inexpensive way to improve light amplification in hospital operating rooms. After experimenting with a glass globe filled with water, the idea for the snow globe struck. Industrious as well as inventive, Perzy eventually turned his idea into a successful business. Read the full article to learn how the invention grew to become recognized globally.

Browse the prehistoric salad bar with these ancient plants

In this video, Benjamin Burger, associate professor of geology at Utah State University’s Uintah Basin Campus talks about the different types of plants present during the Mesozoic Era. Professor Burger explores how these plants changed over time, served as food sources for the dinosaurs, and co-evolved with them during this period.

The US tried to buy Greenland in 1867 and after World War II

Denmark first took possession of the large, ice-covered island in the northern Atlantic in the 1700s. The local population is a mix of native Inuit, Norwegians (from the medieval era), and Danes, though the population is only 56,000. The US has seen the defensive and economic potential of the island for over 150 years.

Search for psychrotolerant and psychrophilic microorganisms found in Antarctica

Developed following a five-week expedition to the southern continent, "Life Under the Ice" allows users to examine a petri-dish-like microscopic world and uncover recordings of organisms that can withstand, or even thrive, in the harsh environment.

The extremophilic origins of watermelon snow and its impact on glacial melting

Also known as "blood snow," the red coloration is produced by snow algae that thrive in extremely cold conditions and take the shape of red spherical cysts in winter. To protect themselves from more intense summer solar radiation, these psychrophiles accumulate red, orange, and yellow pigments, intensifying their coloration and causing glaciers to reflect less sunlight than if they were white.

Eduard Baltzer encouraged 'natural eating' in the 1860s

Historian Corinna Treitel credits the Protestant minister with inventing the concept of “natural eating” in Nordhausen, Germany, in the 19th century. Baltzer believed that people were consuming excessive amounts of schnapps, sugar, and meat, and that this behavior was having a detrimental impact on their lives. He encouraged a diet mostly of fruits and vegetables, though he was not opposed to food grown with artificial fertilizers.

Rare Jurassic-era insect found outside Arkansas Walmart

An entomologist on his way to buy milk sighted a giant lacewing, a rare insect not seen in the US for fifty years. The species has been present on earth for at least 160 million years, but has become incredibly rare in North America.

Danish cookies became a treasured Lunar New Year gift, thanks to their unique tin container

Hong Kong experienced an economic boom in the 1970s, which led to snacking, including on Western foods, becoming a cultural norm. Kjeldsens butter cookies became a popular treat, and their packaging, a distinct tin container, presented them as more refined than a simple snack. Instead, they were considered a worthwhile present for Lunar New Year.

Why did the US make it illegal to sell sliced bread during WWII?

Pre-sliced bread has only been with us for almost 100 years, but during the course of World War II it was briefly banned to save on supplies like wax paper and stainless steel for the war effort. This Atlas Obscura article explores this amusing (though not at the time) bit of food during wartime history.

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.

The Irish 'sláinte!' spread outside the country thanks to immigration

The toast has spread globally because of the waves of Irish immigration in the 19th and 20th centuries. It’s not uncommon to find an Irish pub outside of Ireland, and if you step inside, you’re lucky to hear someone offer a hearty “sláinte!”

Tulips were once viewed as alternative investments in Holland

In the 1600s, during a period of relative wealth for the Dutch after they gained their independence from Spain, some started collecting rare flower bulbs that created speckled and striped tulips.

The cholera bacteria was first isolated in 1854—but the discovery was largely ignored

The pathogen was isolated by the Italian physician Filippo Pacini in Florence, Italy, though his discovery was largely ignored in favor of the popular miasma—bad air—theory of disease at the time. The pathogen was separately isolated about three decades later by German microbiologist Robert Koch.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

Westerners didn't encounter sushi until the mid-1800s

Japan was rather closed off until the mid-1800s, when Westerners, including Americans, began visiting the country and tasting sushi. But it wasn’t until the 1970s that the food became popular outside of Japan. California, in particular, became an American hub for the food, thanks to its large Japanese immigrant population.

Bottled water started as a 19th-century wellness trend

Selling drinking water in America began at resorts in New York and West Virginia, where tourists were encouraged to take the regenerative mineral water back to their homes.

How silica gel took over the world

Silica gel packets are those sugar packet-like bags that keep packaged foods and more dry and free of mildew. First invented in the early 20th century, they saw great commercial success starting in 1927, being deployed in traded goods across the world. This simple invention allows modern supply chains to extend across the globe by extending the preservation of shipped goods.

A moldy cantaloupe supercharged penicillin production

In 1943, a moldy cantaloupe found at a market in Peoria, Illinois, yielded a strain that produced six times more penicillin. Though often credited to lab worker “Moldy Mary” Hunt, accounts differ on who actually brought in the fruit.

A New York farmer established the first cheese factory and revolutionized the industry

Jesse Williams, a farmer in New York state, had a passion for cheese but didn’t have the resources to produce it at the scale he desired. So, in 1851, Jesse and his son opened the first cheese factory, sourcing milk from multiple local farms and producing 100,000 pounds of cheddar—in their first season. Soon, Williams had hundreds of factories and created the prototype for cheesemaking as we know it today.

How billiard balls catalyzed the 'Plastics Century'

For centuries, billiard balls were made of ivory from elephant tusks. But when excessive hunting caused elephant populations to decline, they began to look for alternatives: celluloid, which would become known as the first plastic.

Validation of the greenhouse effect may have been misattributed

Although Irish physicist John Tyndall showed in 1859 that water vapor and carbon dioxide could absorb and radiate infrared radiation, experiments by American scientist Eunice Foote three years earlier identified the same phenomenon for light in general. Historically overshadowed, her work was rediscovered by female historians over a century later.

The Hawaiian pizza was popularized by a Canadian chef

Hawaii's tiki culture was popular in North America through the mid-20th century, with canned pineapple a household staple. Sam Panopoulos, a Greek immigrant who operated a diner in Ontario, experimented with outlandish pizza recipes until he stumbled upon the idea for topping a pie with canned pineapple and ham.

The McIntosh apple, long dominant, is now 10th-most popular in the US

First grown in Ontario, Canada, in 1795, the McIntosh became synonymous with the apple by the early 1900s. Newcomers on the market—especially the Honeycrisp in the 1990s—has nearly rendered the McIntosh irrelevant.

Sexy radishes, big-time LOL

This kind of high-quality content is exactly the reason why Al Gore invented the internet. Open this post see the best collection of sexy radishes in the world!

How slugs helped soldiers during WWI

Slimy, squishy, slow-moving, and heroic? Slugs are land-dwelling mollusks known mostly for causing havoc in our gardens. But during World War I, slugs saved numerous soldier's lives as poison gas detectors. Learn how the unpleasant creatures earned their stripes in the battle to protect soldiers from chlorine, phosgene, and mustard gas as organic detectors.

Ice ages are periods of glaciation that last tens of millions of years

During these periods, Earth grows cold and is covered in massive continental ice sheets. Scientists have outlined at least five major ice ages, which result from the alignment of complex factors, like the flow of ocean currents and the movement and location of tectonic plates.

The symbol of the American lawn

Trimmed, pure green lawns are the norm in US yards and require regular mowing, fertilizing, and weed whacking to keep in order. They are cherished for their simple aesthetic and as a soft area for walking or playing near the house. Still, they are also so-called monoculture zones with only one plant species, lacking biodiverse resilience. This article traces the history of the lawn in America and the contemporary debates over its future.

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.

A history of treating frostbite

Amid Napoleon's invasion of bitterly cold Russia, soldiers succumbed to frostbite by the thousands. Nineteenth century doctors recommended walking and rubbing snow around the affected area. Fast forward to recent years, and the FDA has approved its first ever drug to treat frostbite. Listen to this podcast to learn the history of this wintry affliction.

Footage from the moments the Titanic wreck was discovered

One of the most famous shipwrecks in modern history, the RMS Titanic sank after hitting an iceberg in April 1912. It was discovered on the seafloor in 1985 by a joint US-French research team about 370 miles southeast of Newfoundland.

Some invasive species can provide benefits to ecosystems over time

In the 1990s, round gobies were introduced into the Great Lakes, rapidly spreading and competing with local sculpin and logperch. However, Lake Erie watersnakes, which were on the endangered species list, shifted their diet to be almost entirely made up of the plentiful round gobies, contributing to their loss of endangered status in 2011.

With no textbooks or antibiotics, this WWI surgeon pioneered facial reconstruction

New Zealand surgeon Dr. Harold Gillies made extraordinary advances in the field of reconstructive surgery during World War I and after. This 36-minute NPR podcast interviews historian Lindsey Fitzharris, author of Gillie's biography, The Facemaker, charting how the good doctor reconstructed the faces of numerous soldiers in an age before antibiotics and plastic surgery as we know it today.

Ice found in another star system for the first time

NASA's James Webb Space Telescope has discovered frozen water in a young star system. The ice is similar to that found in Kuiper Belt objects in our solar system, and provides insights into planetary formation processes.

Climate change creates conditions for more invasive species

Increasing temperatures shift the conditions native organisms are accustomed to, allowing those from warmer climates to move in with a greater chance of survival. Drought stress can cause invasive plants to absorb less herbicide, limiting the effectiveness of the control method, while melting ice can open new Arctic shipping routes, expanding the transport of species.

How the peach became Georgia's fruit, though it makes fewer than other states

After the Civil War, the state sought to redefine its agricultural traditions away from slave-dependent cotton. One innovator, Samuel Rumph, crossed two breeds of peach, resulting in the Elberta, which could travel farther without spoiling. The state embraced this delicious identity to transcend its earlier reputation.

'I Love to Eat' was the first nationally televised cooking show

Beard’s show, cohosted with Julia Child, debuted in 1946. It was invaluable in setting the stage for today’s massive trove of televised and online cooking content.

The Rockefeller Center Christmas tree was first erected in 1931 by construction workers

The tradition of erecting a tree in Rockefeller Center officially began two years later, when the company continued what the Depression-impacted workers had started. Today, its lighting and nearby ice skating draw millions annually, making it one of America’s most famous holiday traditions.

Billion-year-old Arctic fossils suggest Earth had fungi far earlier than previously thought

Named Ourasphaira giraldae, this new species of fungus, reported in 2019, was found in the Grassy Bay Formation in the Canadian Arctic. It pushed the fossil record of fungi back by about half a billion years since the oldest previously recognized fungi fossils came from the Rhynie chert, a Scottish site that dates back roughly 400 million years. This fungal discovery also suggests that fungi may have occurred on land much earlier than plants, raising questions about what ancient fungi used for nourishment.

Modern prediction markets started in Iowa in 1988

The University of Iowa's Iowa Electronic Markets were introduced during the 1988 US presidential election. The beginning of their origin story almost sounds like a joke: Three economists walked into a bar.

40% of Americans have ancestors who immigrated via Ellis Island

For over 60 years, Ellis Island was the gateway to America, processing millions of immigrants seeking a new life. While many passed through with ease, others faced rigorous medical exams, legal scrutiny, and even deportation. Learn how this small island shaped generations of American families.

Tetris was launched in the US at Summer CES 1988

Tetris first appeared in the US at the 1988 Summer CES, where Henk Rogers—who would later publish and market the game—first encountered it. This interview revisits that moment, with creator Alexey Pajitnov and Rogers reflecting on how the game gained global recognition.

Feeding grazing cattle seaweed cut their methane emissions by almost 40%

The largest share of the 12% of global greenhouse gas emissions from livestock comes from methane released when cows burp. A study found that introducing a seaweed supplement in pellet form significantly reduced these emissions without affecting cattle's health or weight.