From the CBC - http://www.cbc.ca/m/rich/canada/toronto/story/2010/04/30/911-skeptics.html

9/11 skeptics launch Canadian speaking tour
Last Updated: Friday, April 30, 2010 | 4:08 PM ET
The Canadian Press Three Canadian universities will be used as venues for a speaking tour by prominent 9/11 skeptics.

Americans Richard Gage and David Ray Griffin dispute the conventional wisdom that foreign terrorists linked to al-Qaida brought down the Twin Towers on Sept. 11, 2001.

They will give lectures at the University of Toronto, Carleton University and the University of Quebec in Montreal over the coming days.

Faculty members at the Montreal university told a city newspaper they are upset the institution is being used for the event.

One says it harms the school's credibility.

This tour comes right on the heels of a free-speech controversy that erupted when US pundit Ann Coulter had an appearance cancelled at the University of Ottawa.

-This snippet is what I found when I searched for "9-11 truth" on CBC's website and sorted by date. Two sentences made me think about one of the key obstacles in 9-11 truth.

I was poking around and found this article on ArsTechinca today, thought I would see how accurate or relevant this piece is, and how it may relate to the debate of how our defenses reacted on 9-11, and how these systems could have been compromised.

http://arstechnica.com/science/news/2010/03/the-science-and-technology-of-air-traffic-control.ars

The science and technology of air traffic control
By Arun Reddy | Last updated about 12 hours ago

Air Traffic Control at London Gatwick
Andy Potter