Sept 11, 2001

Five years ago, the attacks of 9/11 ushered in a new global conflict, and began an accelerated series of changes to militaries and defense industries around the world that are not even close to running their full course. The US Department of Defense has put up a site with a wide variety of resources to remember the 5th anniversary of the attack on the Pentagon and World Trade Centers. Five Years Ago: A day we will never forget.

Since we know that many of our readers are engineers, we also recommend Popular Mechanics’ definitive new book covering the various conspiracy theories out there as only dedicated engineers can: Debunking 9/11 Myths: Why Conspiracy Theories Can’t Stand up to the Facts.