Investigators emerging last fall from a house in Chester, Pa., where officials suspected hazardous materials were being produced. Protecting the nation from nearly invisible weapons is a priority of antiterrorism research. (KRT Photo)
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New threat sets scientists
on a patriotic mission
Deeply aware that new scientific ideas - from radar to the atomic bomb - gave America a crucial edge in World War II, scientists across the country are working on weapons for the war against terrorism.
Security analysts trying to narrow list of possible targets
The guessing game has gone on across the nation since Sept. 11: Where might terrorists strike next? Cities, for their concentration of people and because they are centers for commerce, top the list.
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