Scientists at Purdue University have developed an excellent simulation of the Jet colliding with the World Trade Center twin towers on 9 /11 / 2001. This computer simulation supports the findings of a federal agency that the impact of the crash defied the power of the crucial fireproofing material, which initiated the fire and that the weakened towers collapsed under their own weight.The animation should help builders to build safer building. Fireproofing must be made stronger than now. Will lessons be learned?Technorati Tags: World Trade Center