Did You Know?
Some of the much needed investigation addressed by Robert Korol
in the last lines of this documentary was published in 2016 by Steven Jones, Robert Korol, Anthony Szamboti, Ted Walter as "15 Years Later: On the Physics of High-Rise Building Collapses" in Europhysics News, Vol.47, #4, pp. 21-26 (pdf available online). See more
It's kind of a shame and profoundly disappointing - not just on this issue, but on several issues - how universities manage to ignore deeply important questions. And after 40 years in the institution, you get to see what those are. And 9/11 is really one of the most dramatic cases i've ever seen.