There's no doubt that people in this world are quite crazy. They get an idea in their head, and they will run with it for the rest of their lives.
And, here's the another example of that, "Jet fuel doesn't melt steel beams."
A person named, Kurt Sonnenfeld is back with the new "proof" that 9/11 was an inside job.
In this stories, there are some more uncovered conspiracies.
But, some extreme conspiracy theorists claim, planted bombs brought them down.
One longstanding belief is, the towers would not have collapsed in the way they did if they were hit by aircraft.
Some claim there must have been a "controlled detonation" at ground level for the Twin Towers to fall in on themselves as they did.
Fires do not usually reach temperatures hot enough to make a steel structure collapse. Then why the steel get melted?
Most high-rise buildings have sprinkler systems that prevent a fire from getting to a critical level. Were they intentionally turned off?
Skyscrapers are usually protected using flame-proof materials, and so they do not collapse.
The collapse of a third small tower, called Building 7, at the World Trade Centre complex, several hours after the massive skyscrapers fell.
Sonnenfeld said that the discovery is proof that the government knew the attacks were coming and that there is evidence to prove they were involved in preparing attacks.
Now it's up to you to decide.