The images of the past week have been dominated by the terrifying damage done by the Haiti earthquake and its aftershocks. On Just to Clarify today, we will look at the earthquake-resistant measures inherent to Indian cities, if any, and examine what makes a building impervious to earthquakes. Does such a thing as an earthquake-proof structure even exist? And what precise pattern of damage would an earthquake inflict upon a major Indian city like Mumbai or New Delhi? Our guest this week is S. K. Jain, director of the IIT at Gandhinagar and an expert in earthquake engineering.