Part 2/9:
Proponents of the thermite theory argue that its presence in the dust at Ground Zero indicates that the Twin Towers were destroyed by controlled demolition rather than by the impact of the airplanes and subsequent fires. They assert that the nature of the debris, including findings of nano-thermite— a refined variant of thermite— supports this claim. It is suggested that the extreme heat produced by thermite could have melted steel and caused the rapid collapse of the towers.