September 11, Anniversary | featured news

A daring new documentary that uses scientific analysis to challenge the official 9/11 story became the most popular film on PBS during the week of the 9/11 anniversary, which followed its record-breaking broadcast on Colorado Public Television (CPT12).

Eleven years after the 9/11 attacks, there is new information on what the George W. Bush administration knew about al-Qaeda's plans. We learned after 9/11 that a presidential briefing paper in August 2001 was headlined "Bin Laden Determined to Strike in U.S." But Tuesday in the New York Times, investigative reporter Kurt Eichenwald says the White House received ominous warnings as early as May 2001.

Memorial ceremonies marking the anniversary of the September 11 attacks began Tuesday under clear blue skies that recalled the crisp morning 11 years ago when nearly 3,000 people were killed by airliners hijacked by Islamist militants.

President Obama attends a memorial service and Mitt Romney speaks to the National Guard on 9/11 anniversary.

A mother in Malaysia greeted her dead son. People in Manila left roses for the victim who helped give them homes. And mourners in Tokyo stood before a piece of steel from ground zero, remembering the 23 bank employees who never made it out alive.

A hacker broke into the Twitter account of NBC News and sent out a handful of false tweets about a suspected hijacking and a plane attack at ground zero just days before the tenth anniversary of 9/11.

Sept. 11 changed all of us, including our national leaders who were either in charge on that day, or are responsible for our safety today. "The Early Show" spoke to a number of them, to find out where they were during the terrorist attacks ten years ago. "I was driving down Lake Shore Drive in Chicago. I was a state senator at the time as well as teaching law and practicing law. I was going to a senate hearing," President Barack Obama remembered.

On Thursday, U.S. government officials warned of a credible but unconfirmed threat of terrorist activity tied to the 10th anniversary of the Sept. 11, 2001, terrorist attacks. That may have some travelers wondering, should I take extra precautions? The consensus: No need to stay home, but on this day especially, be alert.

U.S. officials said Thursday evening they have "specific, credible but unconfirmed" information about a potential threat against the United States coinciding with the 10th anniversary of the September 11 terrorist attacks.

The federal government is escalating security around the country in preparation for the 10th anniversary of the 9/11 terrorist attacks and conducting confidential briefings with state and local law enforcement organizations. But officials say there is no specific indication that a terror plot against the U.S. is under way....