Watch our special coverage from ground zero.
For live video from today's remembrance ceremonies, click here.
For photos from the New York remembrances, go here.
For a story about the families seeing the memorial for the first time, look here.
For an amazing story of survival from two men who escaped the World Trade Center, go here.
To watch the memorial being built in 90 seconds, look here.
For all of our coverage, including many more videos and photos, go here.
