Cities across the United States will observe the 20th anniversary of the Sept. 11, 2001, terrorist attacks with a number of special events. Many will be live streamed.
9/11: 20 years later
It's been 20 years since September 11, 2001, when terrorists orchestrated by Osama bin Laden hijacked four passenger planes and attacked on American soil. A total of 2,977 people were killed. The attacks changed America and the world in many ways. Thousands still suffer health effects of exposure to the toxic dust at Ground Zero. Many others may be traumatized again by coverage of the anniversary. TV and film producers have sought to tell the stories of 9/11, personal and communal tragedies.
Americans share stories driving to work or huddling around a TV in disbelief that morning. For others, it was running down stairs to escape the World Trade Center, walking home covered in dust.
Many will pause to reflect on the lives lost -- seeing images of them online and in the media. For some it could be healing, but for others looking back could be detrimental to their mental health.
First responders and others exposed to polluted air around the rubble of the World Trade Center are suffering cancer and other illnesses.
Here is a look at 20 ways that the attacks altered the United States, our lives and our world in the two decades since.
TV and film artists have sought answers, celebrated heroes, mourned victims and comforted survivors in projects centered on that painful period in America's history. Here's a rundown.
Here's a look back at Sept. 11, 2001 -- and two decades of memorials that have followed.
"They can shake the foundations of our biggest buildings, but they cannot shake the foundations of America," Bush said, warning that not only the terrorists but all who harbor them would face vengeance.