“The towers—the three-fourths or four-fifths of the buildings beneath the plane strikes–were standing, apparently largely undamaged. There were no signs of fire except in the vicinity of where the airliners had hit. Suddenly, one of the towers blew up, disintegrated, and disappeared in fine dust. Before one could make any sense of this, the same thing happened to the second tower, and it too disappeared into fine dust….”
This article summarizes many important points about 9/11.