In a surprise joint appearance, President Biden and Vice President Harris joined former President Donald Trump and Ohio Sen. JD Vance at Ground Zero for a Sept. 11 memorial event.

On the 20th anniversary of the Sept. 11 attacks, multiple ceremonies commemorated the nearly 3,000 lives that were lost on that day.

NPR's Scott Simon reflects on the displays of unity and diversity following the Sept. 11 attacks.

Richard Guadagno died when United Airlines Flight 93 crashed on 9/11. His memory is scattered through his sister Lori's house in items that continue a conversation between the siblings 20 years later.

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.

Journalist Peter Bergen visited bin Laden's compound in Abbottabad, Pakistan, before it was demolished. His new book, The Rise and Fall of Osama bin Laden, draws on materials seized in the raid.

The U.S. military prison in Guantánamo Bay, Cuba, was created to hold people captured in Afghanistan and the broader war on terror. As the U.S. pulls out of Afghanistan, what happens to its detainees?

First responders and law enforcement officials from the metro Atlanta area filled the Cathedral of Christ King for a special mass service in their honor...