Lots, but see here if you want examples from those better qualified than me.
My favourite though is that the infernos were hot enough to melt steel, yet a passport (of one of the terrorists, no less) was found near the scene. Even the Guardian in the UK couldn't hide their disbelief at that.
The problem is many people are unwilling to believe anything that isn't the official story. Unless you're in Germany, where lots of people don't believe the official version.
Many in the US refuse/d to believe their own Government would plan to kill its own citizens, then operation Northwoods was made public some 30+ years later.
You’ve provided nothing other than a link to a conspiraloon sure, check out the other site posted that decbunks the standard CT stuff re: 911.
What is suspicious about a passport being found? That is something they’d have on them in order to board a plane and they were there...
Is it suspicious because in your mind everything should be vaporised instantly?