A history of raising the alarm, from rattles to 911

A 2,000-year history of alarm clocks

Clocks have revolutionized the way we live, structuring our days into abstract, regular units and providing quantification for those who are chronically late. The alarm clock was the next obvious step: clocks which not only tell you the time but...

When humans discovered fire

Fire has proven crucial for the development of human civilization, but there was a time when our hominin ancestors could not make effective use of it. This article traces the major milestones in humanity's journey with fire based on evidence from...

How fighting wildfires works

Firefighters use sophisticated strategies to control wildfires that sometimes cover thousands of acres. This video breaks down how teams set up fire lines to isolate the fires by cutting down brush and trees around the existing fire, among other...

Chernobyl pushed the world to create rapid-alert systems for nuclear accidents

In the aftermath of the disaster, nations adopted new agreements requiring immediate international notification of nuclear accidents. They coordinated emergency assistance—efforts led by the International Atomic Energy Agency to prevent future disasters from being concealed when radiation emergencies occur.

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

Hear the story of the first paramedic services, which grew out of a community training program in 1960s Pittsburgh

Before 911 existed, cities sent police cars or hearses from funeral homes to medical emergencies. In 1967, a group of young Black men in Pittsburgh changed that, developing the training protocols and lifesaving techniques that became the foundation of modern EMT response.

Volunteer fire departments are declining as communities shift to career staff

As populations increase and emergency calls grow more complicated, many communities are replacing volunteer fire departments with full-time professional staff—a change that boosts response capacity and reliability but also significantly raises costs.

Some companies like to make their IPO day antics unique

An article details some of the wildest bell-ringing day stunts in recent history, from Clifford the Big Red Dog ringing the opening bell to one company's employees roasting marshmallows in a campfire on Wall Street as it went public.

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

How search and rescue teams remove survivors from rubble

At any time, large-scale seismic activity can devastate entire regions, often with little warning. Emergency responders, then, are perpetually on call. This is particularly critical in areas with poor infrastructure.

Go behind the scenes of a 911 dispatch center

This video follows a dispatcher at a Colorado communications center serving over 1,600 square miles across four counties, showing the constant communication and relentless pace of a 24-hour shift on the other end of your emergency call.

Fireworks-related ER visits in 2024 increased by 52% as compared to the prior year

In 2023, there were 9,700 such injuries, but the number was 14,700 in 2024, according to analysis from the Consumer Product Safety Commission. Personal use of fireworks grew significantly during the pandemic, in part due to cancellations of public display shows, and that use has apparently continued—and prompted more injuries. What's more, the Census Bureau indicates that firework imports increased by around 19% between 2023 and 2024.

Americans' love of combining freedom and charred meat began in the 1800s

In the 19th century, politicians (particularly in Virginia) hosted large public barbecues to celebrate Independence Day and, of course, boost their own campaigns. When personal grills became common in the 20th century, the tradition moved into backyards and block parties, where it's still going strong today.

All kinds of people follow the FIRE movement

Amy X. Wang, the assistant managing editor of The New York Times Magazine, looked at the people behind the growing FIRE movement in a recent podcast episode.

View a history of hashtags through 2013

First used on Twitter in August 2007, the social media shorthand gained popularity in October of that year during the San Diego wildfires as a means of coordinating emergency response and disaster relief. Instagram, Google+, Flickr, Facebook, and other social media companies would later integrate hashtags into their platforms.

Smithsonian artifacts that tell the story of 9/11 (w/photos)

Hundreds of objects linked to the attacks, from office supplies recovered at the World Trade Center to firefighters’ gear used at the Pentagon to fragments pulled from the crash site of Flight 93, reside in the national collection. Read about 31 Smithsonian artifacts that help unravel the complex story of 9/11 and its aftermath.

The horror hotlines of the 1990s

Before the internet, 900-number hotlines were the way to retrieve instant information over the phone, whether for weather reports, movie information, or spooky horror stories. Callers could dial the number and hear ghost stories, experience interactive horrors, and more. This article reminisces about this extinct technology and how it paved the way for the internet.

Teen rides stranded scared horse to safety—14 miles out of burning canyon

When wildfires tore through the Los Angeles area in 2025, resulting in one of the worst natural disasters on record, one 16-year-old equestrian named Kalyna Fedorowycz bravely rescued an animal. She saw a horse named Sovereignty in the evacuation zone of the still-raging Palisades Fire, and led and rode him for 14 miles to safety. Sovereignty was eventually reunited with his owner.

Tree rings can reveal centuries of environmental change and natural events

The width and shape of tree rings reflect yearly growth conditions like rainfall or snowfall. Scars in the rings can record disruptions such as fires, avalanches, or earthquakes, explaining when and how those events occurred.

Cleveland's Cuyahoga River caught fire over a dozen times

Between 1868 and 1969, the Cuyahoga River in Cleveland caught fire at least 13 times due to oil and industrial waste. The 1969 blaze garnered national attention, prompting federal action and contributing to the creation of the EPA, which ultimately led to a successful cleanup of the river.

Radar saved the British Royal Air Force from Nazi air assaults

Radar technology—particularly the Chain Home early-warning system—enabled the RAF to detect incoming Luftwaffe raids up to 80 miles out, coordinate fighter deployments through the Dowding System, and achieve interception rates over 90%. This technological edge was pivotal in winning the Battle of Britain and halting Germany's air campaign.

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.

Franklin D. Roosevelt used radio to connect directly with Americans through his 'Fireside Chats'

Beginning in 1933, FDR harnessed the new medium of radio to explain policies and reassure the public during the Great Depression and World War II. His conversational fireside chats revolutionized presidential communication.

The hidden engineering of gas stations

Contemporary gas stations are the result of a century of engineering progress. In the early 1900s, only a few thousand cars drove around, and they used kerosene. As vehicles and cheaper gasoline became more popular, fire hazards grew, forcing the invention of fuel pumps, underground storage tanks, and the automatic shutoff valve—all engineering marvels.

The story of the Radium Girls, who exposed the dangers of radioactive paint

After radium was discovered in 1898, companies began using radium-based paints on watch and clock dials to create a glow-in-the-dark effect. Women who worked to apply the paint were encouraged to use their lips and tongues to help create the fine point needed to draw small numbers, unknowingly poisoning themselves.

A man survived being struck by lightning seven times

Roy Sullivan worked as a park ranger when he was first struck in April 1942 while fleeing a watchtower during a thunderstorm. Nicknamed the "Spark Ranger," he would be struck six more times while driving, in his garden, working in a guardhouse, sitting in his car, walking, and on a fishing trip.

The history of rickrolls (this isn't one)

Rickrolling describes a bait-and-switch meme in which a seemingly relevant hyperlink takes clickers to videos or gifs of Rick Astley’s 1987 single, “Never Gonna Give You Up." It's possible this seemingly ubiquitous internet prank can be traced to a 2006 segment of a radio show in rural Michigan. Erik Helwig called into the show during a listener comment segment and, without saying anything, played Astley's single for all those tuning in.

A 1954 outbreak at a Boston boarding school allowed scientists to isolate the measles virus

While measles was described as early as the 9th century, humanity lacked the medical technology to fight the disease until the mid-20th century. Vaccine development from the Boston outbreak in the 1960s and 1970s led to one of the most effective inoculation campaigns in history.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

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.

Massive 3D printers have been used to build homes by stacking layers of 'concrete toothpaste,' a fire-resistant material that effectively insulates against outside noise.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

A century of Billboard issues documenting the evolution of popular music.

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.

Experimental hantavirus vaccines and therapies, still under development, have long been funded by the US military.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

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

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

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

The deadliest aspect of volcanic eruptions is often not lava, but pyroclastic flows—avalanches of ash, gas, and rock that can move more than half the speed of sound.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

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 idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Poison ivy will likely become both larger and more resilient due to climate change.

In recent years a child anxiety expert has created and tested a novel phobia and anxiety treatment approach for children, focused on changing how parents respond to the fears.

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

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

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.

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