There was explosive material found in world trade tower 7 during 9-11...my question is..........?

first of all, i'm asking in R&S because you guys are more attentive than the other forums. my question is why don't people take this claim more seriously? perhaps in investigating the stories once again but this time by average non-political but educated persons. if i could them, my first choice would be skeptics, need i say more..... any thoughts?