There's a 50-50 chance of another 9/11-sized attack within a decade

As we approach the 11th anniversary of the 9/11 terrorist attack, we can be grateful that nothing like it has happened since. But that doesn't mean that something very much like 9/11 — or even worse — couldn't happen again. In fact, new research suggests that we may be seriously underestimating the risk of another… »9/05/12 3:00pm9/05/12 3:00pm