buildings fall gravity is a law , but turn the building to dust come on explain that will you ? Where is all the stuff/mass that caused the intense strain on the half weak steel beams and resulting in this so called collapse? Study the evidence from other building collapses and see for youself this was not a gravity collapse. Gravity is predictable there would be large pieces of building corners perhaps that would hold and deflect off falling debris. There is nothing left but dust you fools