What were you doing on the morning of September 11, 2001? Assuming you are old enough, you can probably remember it quite clearly. That single day completely changed the world we live in. And although many of the changes were for the worse, on that fateful day, the world came together in ways that we often forget about. So in honor of those who lost their lives, we bring you 25 unbelievable facts about 9/11 you might not know.