Here is a sure way to scientifically verify whether the WTC or any building can collapse through jet fuel burning (which doesn't melt steel, nor weaken it to collapse)

Jet Engine components melt at the melting point of steel, or even easier than steel. Yet they constantly burn with jet fuel fire (that's what happens in an engine), and are not "weakened" or "melted".

- Building a miniature version of the World Trade Center
This shouldn't be very hard, and the government should fund this. There are remote-controlled-planes these days, they could be filled with jet-fuel. So build a World Trade Center with a remote-controlled Boeing UAV at the same scale, with the same measurement and mass proportions. Also, the correct mass proportion of steel in the structure, with each floor made of thin concrete. The correct proportion of jet fuel to UAV size. And same standard of steel as WTC steel. (no aluminum or plastic, please)

And the security for the miniature WTC should be guarded by a collection of different organizations, and not only the cousin of the President.
And the construction should be webcam-ed and anyone, like Wikipedia, can see it live, so liars don't build it in plastic or paper.

And fly the UAV into the miniature WTC (110 yard high, 1 yard per floor), with a little fire to ignite the jet fuel if necessary, but no explosives. The remote-controlled Boeing should be a little over 11 yards in length. And see if the building collapses.

This is the most scientific way, and completely in-line with the Sir Roger Bacon's 5-step scientific method, universally accepted by all scientists and researchers. Without doing this, the government's 9/11 Commission Report can only be considered political polemics, and not a scientific document. (this is not even mentioning all the obvious lies in the 9/11 Commission Report. This is merely mentioning ONE thing, the buildings' collapse, supposedly by jet-fuel fire, and the scientific method way of verifying it. WTC7, by the way, collapsed without anything burning or hitting it, and 9/11 Commission Report omitted mentioning it. So build a 47 yard high WTC7, and see if a slight tremor causes the building to collapse with floors stacking each other.)

The whole project would only cost a few hundred thousand dollars (less than one million). It would cost less than 10 Humvees. That's a penny in government budget. They just spent 700000 millions like it was nothing. and over 1000 millions per month in Iraq. I think a lot of government people are extremely afraid to do this, which is exactly why it should be done and needs to be done.