Looking for this video there are many, many truther videos available on the internet.
I am disappointed with these people. How stupid do you have to be?
Had WTC not fallen it would have been a miracle.
New Scientist: A letter from the Heavy Engineering Research Association's Charles Clifton in response to an article in New Scientist regarding the collapse of WTC1, WTC2 and WTC 7.
In response to the article about the collapse of the World Trade Center (11 February, p 40) and the letter entitled "Steel's weakness" (4 March, p 25) I can advise that we engineers can explain the collapses of the three buildings (WTC 1, WTC 2 and WTC 7) without resorting to any help from missiles or pre-placed demolition charges. In fact the lessons learned from the different but related mechanisms behind the collapses of these three buildings are of vital importance to those of us who strive to improve the performance of steel framed buildings subjected to extreme conditions involving fire. more