25 million pounds of beads are distributed every Mardi Gras, leading to environmental concerns

Beads are social currency during Mardi Gras

Historians believe krewes started tossing small items, colloquially called "throws," to onlookers sometime in the 1870s or 1880s. Eventually, shiny beads became the norm and were usually given to those offering something in return. (At times, that meant free booze or the flashing of breasts.) The early strings of beads were glass, though by the 1960s most were plastic.

Mardi Gras has an annual economic impact of nearly $900M

Tulane University's Toni Weiss studies Mardi Gras' effect on New Orleans. Her study of the 2023 parade found that the event generated approximately $891M for the local economy. Weiss also found that the money that the city spent about $10M on the parade (for security, sanitation, and more) but earned a net fiscal benefit of $28M.

Mardi Gras revelers on floats are required to wear masks

Masks are worn to encourage revellers to embrace their wild side without letting their identity get in the way. That's something New Orleans takes seriously: If you're riding on a Mardi Gras float, city law requires that you wear a mask.

Despite Hurricane Katrina, Mardi Gras moved forward in 2006

Although the city had been ravaged by the storm in August 2005 and many of its residents had still not returned by Carnival season in 2006, Mardi Gras celebrations still trudged on, with many krewes' floats and costumes satirizing the fallout from the disaster. Below is a picture by photographers Tyrone Turner and Susan Sterner of one attendee sporting a hazard fence dress.

The first recorded American Mardi Gras was in Alabama

French explorers observed celebrations in what would become the United States in the late 1600s, but the first recognized modern American Mardi Gras took place in Mobile, Alabama, on New Year's Eve, running from 1830 into 1831. By 1840, the town had incorporated costumes, masks, and themes into its parade. After the Civil War, Mobile's Mardi Gras was moved to the more traditional date of Fat Tuesday. By 1850, a group from Mobile migrated to New Orleans, bringing the city's traditions with it.

Mermaid tears are a lasting and hazardous form of ocean plastic pollution

Also known as nurdles, these tiny plastic pellets are extremely difficult to remove once spilled. Their chemical composition, which enhances absorption, causes them to contain higher concentrations of certain toxins than the surrounding environment.

Pollution from lead battery recycling has led to widespread contamination

Many small-scale operations worldwide remain unregulated, bypassing environmental regulations and causing increasing health threats, primarily to children. A 2020 report by UNICEF found that one-third of the world's children are being poisoned by lead from recycled batteries, among other sources.

The 1977 'SNL' Mardi Gras special is considered the show's biggest disaster

An on-location episode of the then-young sketch show featured drunken heckling from the audience, technical difficulties amid the broadcast, and beads being pelted at cast members.

Louisiana's 'Cancer Alley' has cancer rates 50% above the national average

Due to its proximity to Gulf oil production, an 85-mile stretch of highway linking Baton Rogue, Louisiana, and New Orleans is home to 25% of the country's petrochemical manufacturing. It's also one of the most polluted regions of the US, with cancer rates at 50% above average.

Louisiana's 'Cancer Alley' is infamous for having some of the highest industrial pollution, toxic air emissions, and cancer risks in the US.

The FDA claims microplastics have not yet been shown to pose a health risk

Although microplastics and nanoplastics are found in many foods and environments, their presence does not violate regulations. Additionally, as of 2025, the administration believes evidence does not confirm that detected levels harm humans.

Aerial photos of red tide off the Gulf Coast

The toxic algae grows naturally in warmer oceans in small amounts and is typically harmless. With extended warm periods and unusually-high additions of nutrients from run-off, the algae blooms extensively, posing health risks to wildlife and humans...

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.

Watch how deep-sea mining equipment collects and processes polymetallic nodules—metal-rich, potato-shaped rocks—from the ocean floor and creates environmentally damaging plumes of sediments.

Visualizing the enormity of plastic waste compared to global landmarks

The team at Reuters Graphics visualizes the world’s addiction to plastic bottles. Around the world, almost 1 million plastic bottles are purchased every minute. The illustrations included in this visual explainer show what that pile of plastic would look like if it was collected over longer periods of time and how large the piles would be compared to famous landmarks.

How goldfish cause significant environmental damage when released

Researchers have found that goldfish cause "regime shifts" in habitats as they search for food in places like lake beds, kicking up sediment that muddies the water and disrupts small invertebrates. They can also outcompete native species to further destabilize existing food webs.

Critics say Burning Man pollutes and promotes elitism

Following the storms and extreme circumstances of the 2023 Burning Man, discourse has circulated about elitism, pollution, and more problems brought by the festival.

1970s New York was viewed by many as a city in decline

By 1975, the city owed $5B to $6B in short-term debt; over a million manufacturing jobs had left the city since the end of World War II. Meanwhile, the murder rate was more than double than 10 years earlier. Graffiti was seen as illegal vandalism perpetrated by unsupervised teenagers and was viewed by some as emblematic of the larger societal decline.

Ritual Maya dental ornaments may have prevented tooth decay

Analysis of Maya dental sealants shows they used plant resins and gums—some derived from pine with antibacterial properties—suggesting gemstone tooth inlays may have helped reduce infection while serving ritual and symbolic purposes.

Nashville's economy is benefitting from bachelorette parties at what some say is a cultural cost

In the past decade, Tennessee’s capital has gone from a destination known for its music scene to the country’s bachelor/bachelorette party hub. This podcast episode reveals that despite the financial benefits that bachelorette tourism brings, residents worry about how these specific tourists could threaten Nashville's reputation as a music city.

Chanel faced major backlash in 2021 over its $825 Advent calendar

Chanel’s $825 Advent calendar drew millions of views on TikTok after shoppers unboxed items like stickers, string bracelets, and a standard dust bag—products many felt didn’t match the luxury price. The viral controversy made the calendar one of the year's most criticized holiday releases.

The Times Square New Year's ball has been redesigned 8 times

The first iteration was made of iron and wood, weighing in at 700 pounds. The 2025 version is made of 5,280 crystals and 32,256 LED lights and weighs a whopping 12,350 pounds.

How microbes limited the damage and helped clean up the Deepwater Horizon oil spill

A bloom estimated to contain about 100 sextillion microbial cells broke down much of the 4.1 million barrels of spilled crude oil into nontoxic compounds in what was one of the most significant bioremediations of a human-made disaster. The microbes involved acted similarly to the first patented genetically modified organism in US history: an oil-eating bacterium engineered in 1971.

An anthropologist spent years riding garbage trucks to understand what our trash says about us

Robin Nagle rode with New York City sanitation workers to trace the hidden life of what we throw out. Her research explores what the things we discard reveal about who we are. 1440 explores the hidden life of trash.

The case against the penny

It takes roughly three cents to produce a single penny, with an annual price tag of nearly $100M. The ubiquitous copper coin is scarcely used, ending up in jars or lost in couches, necessitating even more replacement coins, perpetuating a vicious circle. Studies suggest eliminating the coin would not cost consumers money. See a quick overview of the problem here.

Why Belgium is now the cocaine capital of Europe

Belgium has become Europe’s cocaine-trafficking capital. Recently, Belgian ports have seen record seizures of cocaine. In 2020, the port of Antwerp accounted for 40% of all cocaine seizures in the EU. And local authorities are struggling with the...

Massive blooms of microscopic plankton called dinoflagellates produce the neon blue light seen in glowing tides.

In 2023, there were nearly as many payloads in LOE as trackable pieces of debris

In 2021, the European Space Agency estimated that more than 130 million space debris objects larger than 1 millimeter were in low Earth orbit, though only about 22,000 were being tracked. As of late 2025, the tracked total exceeds 49,000.

Colombia exported 35,000 tons of greens for Valentine's Day bouquets in 2025

The country is home to the green foliage that pads out Valentine's Day bouquets. Over 70% of the country's Valentine's Day exports (an operation that includes 500 flights) went to the United States. Environmental activists warn that the large-scale cultivation is harming a fragile ecosystem.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

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.

Apollo astronauts left items in the moon's 'toss zone,' including golf balls, family photos, and bags of human waste, to make room for lunar rocks.

Cultural norms about how to handle the bodies of loved ones in communities in West Africa have hampered Ebola responses.

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

Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.

See these 16 pieces of art evoking phobias of snakes, flying, spiders, and more. 

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Tattoos remain visible on your skin thanks to immune cells called macrophages

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Prince's sexually explicit 1984 track 'Darling Nikki' attracted the ire of the Parents Music Resource Center, an advocacy group that inspired the Parental Advisory sticker, even though the song ends with a Christian message.

During the French Revolution, a botanist's letter asking about "dear Rhus" (poison ivy) was intercepted, leading authorities to suspect he was conspiring with the Russians.

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.

In 2009, the nation was gripped by the story of a missing young boy who was believed to be floating over Colorado in a homemade balloon, until it was revealed that he was at home the whole time.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.