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New York City and Washington DC and Chicago are on guard for so-called dirty bombs, Bob Orr told us in a CBS Exclusive. They are conventional explosions that emit a cloud of radioactive gas that would contaminate urban centers. Orr accompanied counterterrorist teams as they conducted a drill to search for cesium, a radioactive ingredient in a dirty bomb. Their problem: "Naturally occurring radiation is everywhere." The teams cannot tell whether extra isotopes have been introduced into a city without knowing first about the non-dirty radiation we absorb every day. Who knew? Granite emits radiation. The tombstones at Arlington Cemetery are radioactive. Heavily-fertilized lawns on suburban golf courses glow for a Geiger counter.
These are some really dirty golf courses. I agree.
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