Satellite Images Depict Tsunami's Path, Devastation

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Satellite image of tsunami impact

This QuickBird satellite image of the southwestern coast of Sri Lanka was made shortly after the moment of tsunami impact Sunday, slightly less than four hours after the earthquake. Reuters/DigitalGlobe hide caption

itoggle caption Reuters/DigitalGlobe

Satellite imaging can help construct a before-and-after picture of destruction in the wake of the Indian Ocean tsunami from last weekend, helping in the allocation of aid resources. Such imaging may also bolster the argument for an alert system in the region. NPR's Robert Siegel speaks with John Pike of



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