9/11

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

A Southern California community grapples with the legacy of being secretly surveilled by the FBI. Twenty years later, the matter is a legal fight that has reached the Supreme Court.

Photographer Lucas Foglia was 19 during the summer of 2002 when he made portraits NYC residents.

No boarding pass or ID was needed to go to the gate, and 4-inch-blade knives were allowed aboard planes. Now we take off shoes, can't have liquids over 3.4 oz and go through high-tech body scanners.

Loved ones of people lost on United Airlines Flight 93 share how they struggled with grief, embraced it and discovered new depths of mourning over 20 years.

These books provide a detailed accounting of events that have defined the U.S. role in the world in the first part of the 21st century. None makes for cheery reading, but all offer sobering lessons.

Two victims of the terrorist attacks on the World Trade Center on Sept. 11, 2001, were recently identified through DNA analysis.

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.

"Almost everyday I remember that 44 Americans gave their lives to stop the plane that was headed to this Capitol building," she said. "The capitol stands because of people like that."

The Yemeni man, who is in his mid-40s and known by several names, has been held for more than 18 years. Although cleared for release, the U.S. must still find a place for him to go.