Learning from past, they did it right.

DESIKAN THIRUNARAYANAPURAM STATESMAN NEWS SERVICE WASHINGTON, Sept. 12. The terrorists who crashed two planes on to the World Trade Center in New York apparently had learnt a lesson from a much-lower-impact attack on the buildings in 1993.

In that attack, a car, laden with explosives, was left under the building and the explosion killed 6 people and injured hundreds. It damaged several underground floors of the 110-storey buildings, but left the rest of the structure relatively intact.

According to the New York Times, the twin towers, completed in 1976, were designed to withstand earthquakes and impacts from small planes. But crashing two high-speed Boeing …