re: statist new doubts on wtc collapse/grant62
As opposed to you who knows everything and who believes everything he/she reads in the National Enquirer.
As for Popular Mechanics having no credibility maybe you didn't read "PM consulted more than 300 experts and organizations in its investigation into 9/11 conspiracy theories. The following were particularly helpful.".
And then look at this page http://www.popularmechanics.com/science/defense/1227842.html?page=9&c=y and tell all these people they got no credibility.