To take one persistent canard, it is true that jet fuel cannot melt steel beams. It is essentially kerosene, burning at approximately 815°C, whereas steel’s melting point is around 1,510°C. Yet, while 9/11 truthers clutch to this factlet with religious fervour, it simply highlights a profound misunderstanding of basic mechanics: steel rapidly loses its tensile strength with temperature. At 590°C, it diminishes to 50 per cent normal strength.
