When it comes to mental health, the only criteria the FBI uses to deny a gun license is 'mental adjudication,' a legal state determined by a local or state judge.
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.
At the foot of the Rocky Mountains lies Florence Supermax, a prison where all of America's most dangerous criminals are held. Take a look at life on the inside.
At this moment, there are more than 250,000 child soldiers fighting in wars around the world. ISIS is no stranger to using children directly in combat, as propaganda subjects, or as suicide bombers.
Climate change is a big worry in Latin America, Asia and Africa, but ISIS makes more Europeans and North Americans anxious.
World leaders joined voices to condemn the French and Tunisian terrorist attacks during Ramadan, calling them barbaric and appalling.
ISIS sympathizers are growing via the Internet, and provocations like the event in Texas don't help.
+ Load More