Click here to open in separate window
On September 11, 2001, the world witnessed the total collapse of three large steel-framed high-rises. Since then, scientists and engineers have been working to understand why and how these unprecedented structural failures occurred.
This article, which was published in Europhysics News, the magazine of the European physics community, arrives at the conclusion that "all three buildings were destroyed by controlled demolition. Given the far-reaching implications, it is morally imperative that this hypothesis be the subject of a truly scientific and impartial investigation by responsible authorities."
So, how could it have been done? Here's one take on it:
And here's another one:
