FYI the Daily Mail article is mostly based on the opinion of David Ray Griffin "a retired philospher at Claremont School of Theology in California". A philosopher simply isn't qualified to give anything more than opinion on a hugely technical subject like this - any more than I am with a masters degree in physics. Thousands of people have opinions on this, and not matter what their "gut feeling" is it doesn't mean squat.

The research from the Alaska engineer sounds interesting though. It hasn't been published yet but I guess he's already been giving some leaks about what his conclusions are. Remember that research unless peer reviewed and verified by others inherently questionable. Bias, errors, mistakes can make it a no more than a flawed document. We'll see. If it is good paper worth of publication it will have sold factual information and research with conclusions that stand up on their own without meer opinion, conjecture, and gut feeling.

You can read more about that research for yourself here: http://www.wtc7evaluation.org/ and here https://www.youtube.com/channel/UCs1XnA-qqMEAUS-gQN5I5Qw

It is sure to be a very popular piece of research!