The 9/11 plane crashes, which resulted in the collapse of the Twin Towers, created toxic dust that included materials including asbestos, silica, metals, concrete, and glass.

The toxic dust from 9/11 sites still claims lives decades later

In the years after 9/11, nearly 17,000 first responders enrolled in health programs have reported cancers and respiratory diseases linked to Ground Zero exposure. More have died from related illnesses than were killed on the day itself.

9/11 first responders still deal with significant mental and physical impairments.

343 members of the Fire Department of New York died on 9/11 trying to rescue people from the World Trade Center.

Children of 9/11 Ground Zero responders are suffering from intergenerational trauma similar to what's seen among the children of Holocaust survivors, according to recent research.

View artifacts at the Smithsonian that tell the story of 9/11.

Experience 9/11, the deadliest terrorist attack on American soil, as it happened.

A NYC church near ground zero became a 24/7 relief center for more than eight months without closing after the attacks, providing meals, beds, and other support to relief workers.

Tornadoes can cause significant air pollution and diminish air quality

Asbestos, a hazardous material that can cause lung cancer, is commonly found in buildings constructed before 1980. Tornadoes that damage such buildings can release asbestos into the air, along with other toxic pollutants and dust as materials are lifted. Individuals, particularly those with asthma or other chronic lung diseases, are encouraged to wear masks after a tornado.

Explore personal 9/11 oral histories from survivors, first responders, and families

The 9/11 Memorial Museum's archive includes over 3,500 firsthand interviews—spanning survivors, first responders, family members, and residents—offering rare, deeply personal perspectives on the tragedy and its aftermath.

9/11 was the first global disaster watched in real time across the world

As the first plane struck at 8:46 a.m. ET, CNN's live feed broadcast images worldwide within minutes. An estimated 2 billion people watched the collapse of the Twin Towers live.

Air pollution in war-torn Iran unleashes invisible toxic threats

Burning oil depots and bombed buildings are endangering the health of millions of people during the 2026 attacks. Heavy metals from munitions and other damaged materials are going airborne, but the exact health implications depends on dose, wind currents, and other factors including preexisting health conditions.

Volatile chemical contamination can last in burn areas long after urban wildfires

Lead, arsenic, asbestos, and other chemicals have been found trapped in smoke-exposed rugs, couches, pillows, and other furniture that appeared otherwise undamaged from the 2025 LA wildfires. The gradual release of these substances has produced dangerous indoor air concentrations and contributed to increased emergency room visits and abnormal blood tests.

Colleagues carried a quadriplegic coworker down nearly 70 flights of stairs to safety on 9/11.

Broadway theaters reopened 48 hours after the 9/11 terrorist attacks at the request of New York Mayor Rudy Giuliani.

Explore how close you live to some of the most contaminated places in the US

Known as Superfund sites, these toxic locations undergo long-term cleanup to remove hazardous waste, protect health, and restore land for safe reuse. As of 2025, the EPA lists around 1,300 active Superfund sites on its National Priorities List, with more than 450 cleaned and removed since 1980.

One Day in America series reveals the full timeline and human toll of 9/11

This National Geographic episode reconstructs the events of 9/11—highlighting the Pentagon attack, Flight 93 hijacking, South Tower collapse, and rescue efforts—offering a detailed, chronological account of how the day unfolded.

After the 9/11 terrorist attacks in New York City’s Financial District in 2001, many banks decided to relocate

Much has been said about why today’s top banks are typically no longer headquartered on Wall Street itself. The terrorist attacks in New York City’s Financial District on Sept. 11, 2001, are one reason many banks decided to relocate.

The resurgence of Black lung disease in coal miners

Black lung disease is a preventable condition long associated with coal miners who regularly breathe in toxic coal dust. Simple workplace safety procedures make the disease entirely preventable, but cases are rising. Due to lax enforcement of rules, miners in Central Appalachia are increasingly diagnosed with cases stemming from silica dust inhalation.

One hijacked plane struck the Pentagon on 9/11, killing 125 people inside

American Airlines Flight 77 crashed into the Pentagon's west side, destroying a section of the building and killing all 59 on board, along with 125 military and civilian personnel, making it the deadliest attack on the US military headquarters.

Watch New York City's Tribute in Light to the victims of 9/11

Tribute in Light is a commemorative public art installation first presented six months after 9/11 and then every year thereafter, from dusk to dawn, on the night of September 11. It has become an iconic symbol that both honors those killed and...

Welles Crowther, the "Man in the Red Bandana," saved up to 18 lives by repeatedly entering the south tower's burning sky lobby to guide survivors to safety before dying in its collapse.

The Love Canal disaster exposed the dangers of buried toxic waste

In the late 1970s, residents of Niagara Falls, New York, discovered their neighborhood was built atop 20,000 tons of chemical waste. Leaking toxins caused illness and birth defects, sparking nationwide outrage and leading to the creation of the EPA's Superfund cleanup program in 1980.

9/11 permanently changed air travel security in the US with the creation of the Transportation Security Administration.

Particles found in Martian air pose significant risks to human lungs

Ultrafine dust, just 3 micrometers wide, is small enough to bypass lung defenses and enter the bloodstream, where its highly reactive chemicals can cause thyroid disease. Silica in the dust can also cause silicosis, a chronic and incurable lung disease.

After the World Trade Center attacks, all bridges and tunnels were closed, and civilian ships helped evacuate roughly half a million people from Manhattan.

AP Photos: 20 images documenting the enormity of 9/11

The Associated Press shares 20 photographers’ frames from Sept. 11, 2001, when hijackers crashed commercial planes into New York’s World Trade Center, the Pentagon and a Pennsylvania field.

Watch Springsteen open a somber 9/11 tribute

“America: A Tribute to Heroes” was a fundraising telethon on Sept. 21, 2001, and simulcast across the four major networks. Springsteen opened the program with “My City of Ruins,” a song originally written about Asbury Park that took on new significance after the Sept. 11 terrorist attacks.

Legionnaires' disease is a serious lung infection caused by Legionella bacteria, and it's often contracted from inhaling contaminated mist or water.

President George W. Bush learned of the 9/11 attacks while visiting a classroom.

Coverage of the 9/11 terrorist attacks helped shape Wikipedia's editorial policies

Launched nine months earlier, the site was featured on Yahoo's news page, attracting traffic from information seekers as dozens of new editors created hundreds of articles, including memorials, conspiracy theories, and donation and volunteer pages. Discussions between editors would begin establishing rules for handling breaking news events.

They lost loved ones on 9/11. Hear the heart-wrenching voicemails they'd leave for them.

NPR set up an old phone booth in Brooklyn Bridge Park — across the river from the new World Trade Center — and invited people to leave a voicemail for someone they lost that day.

Double rainbow appears in New York City on 9/11 anniversary

On the evening of the 9/11 anniversary in 2023, a double rainbow appeared after a thunderstorm across Manhattan, providing inspiration 22 years after the terrorist attacks there. Peruse several amateur images taken of the phenomenon which were shared on social media, including shots from up high in condos overlooking Central Park and from across the Hudson River in New Jersey.

9/11 reshaped US foreign and military policy for decades, shifting focus to non-state actors and the Middle East.

How NATO responded to 9/11

The collective defense clause of the NATO constitution has only been invoked one time: after the 9/11 terrorist attacks against the United States. This video explores the immediate actions NATO took to respond to the attacks to support the United States. These firsthand clips from 2001 give a sense of the magnitude of the moment and the difficult decisions facing NATO leaders at the time.

A Manhattan building doomed to collapse was saved in secret

After completing the Citicorp Center, its engineer realized that cost-cutting measures to use bolted instead of welded joints made the building vulnerable to collapse under quartering winds. For three months, crews worked in secret at night to reinforce the building under Project Serene.

One Fair Wage is a national organization advocating for eliminating subminimum wages

Saru Jayaraman has run One Fair Wage since 2020, an offshoot of a 9/11 relief organization for displaced workers and victims’ families she helped start shortly after the attacks. Seventy-three employees of the World Trade Center’s top-floor restaurant were killed on September 11.

Most people breathe fungal spores daily without getting sick

Most people breathe in hundreds of Aspergillus fumigatus spores daily without getting sick—it’s a common microscopic fungus in our environment. But people who are severely ill, including those who have undergone an organ transplant, are at risk of developing infections from these spores.

An in-depth account of the image of 'The Falling Man' whose final seconds capture the visceral horrors of 9/11

Do you remember the photograph above? In the US, people have taken pains to banish it from the record of Sept. 11, 2001. Here's a detailed account of the story behind it, the search for the man pictured in it, and its impact on those who lived through the tragic day.

Exposure to ionizing radiation from nuclear accidents can damage DNA

The damage can increase the risks of cancer, cataracts, heart disease, and other illnesses based on exposure times and intensities. Contaminated food, water, air, or soil from near nuclear accidents can further prolong one's exposure.

Review the health effects of living near oil refineries, including increased respiratory risks

An analysis of 54 studies published between 1977 and 2024 in 15 international regions found evidence that proximity to refineries increased the risks of leukemia, asthma, bronchitis, and respiratory symptoms. Several studies also identified worse cardiovascular function in children and adults living near refineries, alongside other acute and chronic health impacts.

A writer's reflection on 'The Falling Man' - the man who fell from the World Trade Center

In an excerpt from his ‘Press Box’ interview with Bryan Curtis, writer Tom Junod discusses his Esquire story about the image of a man who fell or jumped from the North Tower on Sept. 11, 2001.

Welcome to Gander, a tiny town of around 10,000 people in Newfoundland, which took in nearly 7,000 passengers for days after the 9/11 attacks grounded all air travel in the US.

Legionnaires' disease is named after a 1976 outbreak at a state convention of the American Legion in Philadelphia.

The children of parents who died on 9/11 share their stories in remembrance

Many children of 9/11 victims were too young to remember their parents who died. They’ve grown up living with the tension between having a personal connection to the day but few, if any memories. Read some of their stories.

More than 500,000 people worked to contain Chernobyl's fallout, many with very little radiation protection.

The atomic bombs dropped on Japan had massive human costs

The US atomic bombings of Hiroshima and Nagasaki in August 1945 killed around 210,000 people—more than 38,000 of them estimated to be children—with tens of thousands more later dying from radiation-linked illnesses, leaving lifelong trauma and increased cancer risks.

US intelligence warned in multiple reports of al-Qaida's plans to strike before 9/11.

How did the pandemic affect mental health?

Read this research brief to learn more about why heightened mental health and substance use concerns persist three years after the outbreak of COVID-19. According to a recent survey, the vast majority of American adults view the nation as facing a...

Mycotoxins are toxic compounds produced by fungi—some show up in food

About a quarter of the world’s agricultural products are contaminated with mycotoxins. Some of these compounds can cause serious health problems, including cancer, so the US government has set up monitoring programs to detect them in our food and in animal feed. Humans can become ill if they eat contaminated food, but also if they ingest products from animals that had previously consumed these toxic compounds, such as milk from a cow that ate contaminated corn.

President Bush threw the first pitch at the World Series in New York City less than two months after 9/11.