September 11, 2001 will be remembered as one of the most horrific and unbelievable days ever experienced in the United States. The events of this day certainly affect every American, and likely will affect every person in the world in some way.
Everyone at HowStuffWorks expresses their deepest sympathy to the families of the victims in this tragedy. Approximately 2,400 people were killed at Pearl Harbor, and the September 11 tragedy is likely to exceed that.
Three new articles at How Stuff Works help to understand exactly what has happened this week:
How Terrorism Works - A concise overview on both domestic and international terrorism that helps you understand the range of terrorist activity.
How Osama Bin Laden Works - His name has been in the news constantly as a likely suspect. Learn who he is and what he has against the U.S.
September 11, 2001 - Answers common questions about the events on Tuesday, including "What happened when?" and "Why were these explosions so powerful?"
These other articles also contain information that may be useful in understanding the events of this week:
How Black Boxes Work
How Skyscrapers Work
How Nuclear Bombs Work
How Cruise Missiles Work
How NATO Works
How Blood Types Work
How Cell Phones Work
How Building Implosions Work
How Airport Security Works
How Emergency Rooms Work
The style of HowStuffWorks is generally upbeat, and that style does not fit the somber mood of the nation at this time. For that mismatch I apologize, but I hope that these articles are useful to you if you are looking for information related to this tragedy.