The origins of World Laughter Day

Humans are wired to pick up on each other's emotion, making laughter contagious

The reaction plays a key role in establishing interpersonal connections and relieving stress by releasing endorphins—feel-good hormones. A 2021 study identified at least 65 animal species that produce playful sounds, such as laughter.

See this collection of mental health cartoons

These cartoons were curated around mental health themes in celebration of World Mental Health Day, which is observed annually on Oct. 10. The 15+ cartoons include thematic nods to weathering mental health challenges and looking forward to better times ahead.

What does LSD have to do with Bicycle Day?

Bicycle Day, generally celebrated on April 19, doesn't have much to do with the two-wheeled, human-powered vehicle as the name would imply. Instead, it's a celebration of the world's first acid trip. On April 19, 1943, Albert Hofmann took an experimental dose of LSD at his lab before trying to return home via bike. This article includes comics from a graphic novel detailing Hofmann's trip.

Twelve ways the world celebrates springtime

Celebrating the seasonal change is rarely filled with as much relief and hope around the world as spring. This list compiles some famous and lesser-known springtime traditions from diverse cultures.

One pop-culture historian fooled the nation with a fake origin story of April Fools' Day

In 1983, Joseph Boskin, a professor at Boston University, was interviewed by the Associated Press to discuss the history of April Fools'. Boskin shared a made-up story about a jester who took over Rome for a day and proclaimed that April 1 would henceforth serve as 24 hours of silliness. AP published the fib about "King Kugel," creating buzz and confusion for news outlets around the country.

A research lab in Colorado believes comedy is based on ‘benign-violation’

The University of Colorado at Boulder’s Humor Research Lab (which has the decidedly funny abbreviation “HURL”) posits that comedy thrives on relatively harmless violations of dignity or norms.

Comedic roasts, an ironic inversion of toasting, took off in the 20th century

Ribbing amongst friends likely goes back to the dawn of man, but formalizing the act caught on with fundraisers held by the Friar’s Club, a New York organization for theater agents. Rather than raising their glasses to good fortune and health, comics eviscerate an “honoree”—along with everyone else on stage—though they usually conclude with an earnest toast.

Earth Day has become the largest civic event in the world

What began in 1970 with 20 million Americans now involves more than 1 billion participants across over 190 countries each year. Earth Day now encompasses rallies, cleanups, and climate actions worldwide.

Lunar New Year is celebrated around the globe

“Lunar New Year” is a catchall term that encompasses celebrations in several Asian countries. The date of the new year can vary by location depending on which calendar—lunar, lunisolar, or solar—is being used, but many of the traditions are shared across borders.

Key milestones in the history of the World Health Organization

The World Health Organization, a UN agency founded in 1948, was first proposed at the 1945 UN Conference to coordinate global health efforts. This interactive timeline marks the WHO’s 75th anniversary with major public health milestones.

The origins of Father's Day

Father's Day occurs on the third Sunday in June in the US. It was inspired by the same movement that advocated for Mother's Day, and was first celebrated in 1910. However, the day wasn't official until 1972, many decades after its counterpart, Mother's Day, was formally adopted as a holiday.

Oktoberfest, explained

The first Oktoberfest was held in 1810 to celebrate the marriage of Prince Ludwig and Princess Therese von Sachsen-Hildburghausen. It was the surprising prototype of what would become every beer fan's favorite festival. Held in late September and early October, Oktoberfest is the largest folk festival in the world.

The Jane Goodall Institute was not amused by a 'Far Side' cartoon, but Goodall was

The doctor's institute was not amused by a cartoon by Gary Larson that used her name, sending the "Far Side" author a cease and desist letter. However, Goodall thought the cartoon was funny and rescinded the letter. Goodall and Larson would go on to become friends and work together.

Greenwich, CT named June 4 'Ray & Barbara Dalio Day'

In 2025, the Town of Greenwich named June 4 "Ray & Barbara Dalio Day" in honor of the couple's long legacy of charitable contributions to the town. The couple has lived in Connecticut for more than 40 years.

The origins of the Guinness Book of World Records

Yes, it was the beer company that started it. In 1955, the very first edition of the Guinness Book of World Records debuted as a marketing campaign for the famous Irish beer brand. Get all the details on the origins here.

See hilarious photos from the Comedy Wildlife Awards 2025

Napping frog princes, annoying lion husbands, and kung fu sea eagles are just some of the charming shots you'll find among the finalists for the award.

Walt Disney’s Laugh-O-Gram Studio featured his earliest innovations in animation

Before he founded his iconic film company, Walt Disney was a young animator in Kansas City, Missouri. After scoring a contract to create animated newsreels for local movie theaters, Disney formed Laugh-O-Gram Studio, where he created innovative animated shorts that set the path for his later work.

The holiday has evolved alongside its participants' cultural identities

The Day of the Dead blends various traditions, including Aztec myth, Mexican heritage and Chicano identity. That makes for a complex and evolving holiday. This conversation between Cynthia Vidaurri, a Smithsonian folklorist, and Lalo Alcaraz, a cultural consultant for “Coco,” analyzes how the varied influences have created the modern holiday.

On the benefits of 'fart walks'

Walking has proven benefits for flatulence by kickstarting the process of peristalsis in the bowels and facilitating easier farts and burps. The timely exercise is also correlated with weight loss (as well as potentially reduced opportunities for social embarrassment).

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

Explore real-life events linked to Friday the 13th

Though no statistics support the idea that Friday the 13th is more unlucky than other dates, the myth persists. See a grim collection of unfortunate events that occurred on the date throughout history.

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

Read Swami Vivekananda's 1893 speech to the World's Parliament of Religions

The Hindu monk’s appearance at the conference, which many credit with introducing the US to Hindusim, emphasized tolerance and bemoaned religious violence and bigotry. “I fervently hope that the bell that tolled this morning in honor of this convention may be the death-knell of all fanaticism,” he told those assembled.

A short-lived dance festival gave a promoter the idea for Coachella

In 1996, Goldenvoice CEO Paul Tollett helped organize the Organic festival, an all-night electronic music festival held at a ski resort east of Los Angeles. Tollett said he was inspired by the way Organic's lineup brought the United Kingdom's burgeoning rave culture to a distinctly picturesque and American venue and environment.

Visualizing the genetics of SARS-CoV-2

The COVID-19 pandemic, caused by the SARS-CoV-2 virus, began with an outbreak in Wuhan, China in December 2019, and rapidly spread worldwide in early 2020. On March 11, 2020, the World Health Organization declared COVID-19 a global pandemic, leading to widespread lockdowns, travel restrictions, and economic disruptions.

Most memes now begin on TikTok

The website Know Your Meme looked at the data for 700 to 1,400 memes uploaded to the platform each year from 2010 to 2022. In 2010, a majority of memes began on YouTube (34%) or 4chan (28%), but by 2022 most were starting on TikTok.

The unexpected rise of the global romcom

The romantic comedy has mostly fallen out of favor in the US, but it's booming in other parts of the world, including India, Nigeria, and South Korea. Rebecca Liu talks with film scholars and industry veterans to unpack why that happened and whether an American romcom renaissance is possible.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

When a Paris department store hesitated to sell Estée Lauder's perfume, she 'accidentally' broke a bottle, causing the smell to spread throughout the store and shoppers to start asking to buy the scent.

See the 25 of the best photos of auroras from around the world.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

The distributor behind 'Rocky Horror' pulled the film from its scheduled national release, believing it would be a failure, though it eventually amassed a dedicated fanbase through midnight showings, a trend that continues over 50 years later.

The first robot in literature may have been a 'mechanical man' in 1907's 'Ozma of Oz,' a book in L Frank Baum's 'Wizard of Oz' series.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

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

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

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

Comedy legend Catherine O'Hara, star of 'Schitt's Creek' and 'Home Alone,' quit 'Saturday Night Live' after just one week to return to her old job.

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

One of the most famous portraits ever taken is 'Afghan Girl' (1984) by Steve McCurry, yet the subject Sharbat Gula went much of her life without being identified or benefitting from the image's success.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Artificial coral reefs have been 3D printed from nontoxic, biodegradable terracotta clay, which coral polyps have used as a foundation for rebuilding marine ecosystems.

Meet the 56 signers of the Declaration of Independence—most of whom didn't put pen to paper until August 2, 1776—and see their original signatures.