United States marks 25 years since 9/11 as New York discloses post-attack toxic air records

Commemorations and new disclosures on toxic air

The United States marks 25 years since the 11 September 2001 attacks, in which 19 hijackers killed nearly 3,000 people. Donald Trump attends the remembrance ceremony at the Pentagon on Friday, while Vice President JD Vance represents the White House at Ground Zero in New York City. Alongside the anniversary, New York City Mayor Zohran Mamdani released internal documents showing municipal authorities knew the air around Ground Zero remained toxic for months after the collapse of the towers, despite earlier assurances to the public that the site was safe. Medical monitoring data published alongside the records shows that deaths from cancer and pollution-related illnesses tripled among tracked survivors and emergency personnel.

The timeline of the attacks

The attacks began on the morning of 11 September 2001 when hijackers took control of four commercial airliners. American Airlines Flight 11 struck the North Tower of the World Trade Center in Manhattan at 8:46 AM, followed seventeen minutes later by United Airlines Flight 175 striking the South Tower. At 9:37 AM, American Airlines Flight 77 struck the western facade of the Pentagon at approximately 850 kilometers per hour, killing 59 victims on the aircraft and 125 personnel inside the defense headquarters. A fourth airliner, United Airlines Flight 93, crashed in Somerset, Pennsylvania at 10:03 AM after passengers fought with hijackers who intended to strike the US Capitol.

The South Tower collapsed at 9:59 AM, and the North Tower collapsed at 10:28 AM, leading New York Mayor Rudolph Giuliani to order the evacuation of Lower Manhattan at 11:02 AM. At the Pentagon, 184 memorial benches mark the site of the attack.

Geopolitical response and legal fallout

The attacks prompted military campaigns across the Middle East and Central Asia. The United States launched an offensive in Afghanistan in October 2001 after the Taliban refused to surrender Al Qaeda leader Osama bin Laden, who was later located and killed by US special forces in Pakistan in May 2011. In March 2003, US forces invaded Iraq to overthrow Saddam Hussein, despite the absence of proven links between the Iraqi government and the September 11 attacks. Former interim Iraqi Prime Minister Iyad Allawi recalled his reaction to Washington's immediate military response.

I was surprised by the way the United States reacted.

The post-attack security architecture expanded state detention powers, including the establishment of the detention camp at Guantanamo Bay. Nearly 800 men have been detained at the facility, which remains operational despite an executive order signed by President Barack Obama in 2009 directing its closure.

Generational shift and educational initiatives

Approximately 100 million Americans were born after 11 September 2001, creating a growing generational gap in firsthand awareness of the event. Surveys of young adults in New York indicate that many students struggle to identify the perpetrators or key details of the attacks. Fashion business student Josephine Stenquist described the difficulty younger generations face in understanding the tragedy.

I know it was something tragic and that there are many conspiracy theories. But to tell you the truth I am not clear on who did it.

In New York City public schools, students study the history of the attacks across three academic grades. To support public memory, the New York City Council allocated $1 million to expand educational programs at the 9/11 Memorial and Museum.