Sorry Conspiracy Theorists

You've once again been proven wrong:

"A computer simulation of the 2001 World Trade Center attacks supports a federal agency's (NIST) findings that the initial impact from the hijacked airplanes stripped away crucial fireproofing material and that the weakened towers collapsed under their own weight.

The two-year Purdue University study, was the first to use 3-D animation to provide visual context to the attacks."

Watch the video here.