Jihadists continue their campaign to destroy the treasured heritage site.
While Americans have an admirable tendency to focus on the positive, historians say it's critical to also remember tragedy.
A golden retriever that worked search and rescue at Ground Zero in new York on September 11, 2001 had an amazing day in the city.
Brain chemistry, previous training and pack mentality likely led to the heroic restraining of a terrorist by five men on a French train.
The men who took down a heavily armed attacker on a French train were awarded France's highest honor.
Hunkered down in his Pakistani compound, Osama bin Laden pleaded with his followers to stay focused on attacking the United States.
Smaller terrorist groups are tougher to stop, but they also tend to cause less damage.
Solo-working experts and secrecy are a recipe for disaster, experts warn, when it comes to hunting terrorists.
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