Years later, looking for traces of Sept. 11 victims





While much of New York has tried to return to normal since September 11, 2001, the search for victims of the World Trade Center attacks goes on every day.

In what some see as necessary and others see as excessive, anthropologists and forensics experts are sifting yet again through rubble for remnants of the nearly 3,000 people killed when two hijacked jetliners crashed into the twin towers.

With buildings slowly being erected where the towers stood, the latest effort to comb through 844 cubic yards of debris collected since 2007 from excavation of new sections of Ground Zero was launched this month.

Scientists have sifted through two batches of debris already and are testing those samples for human DNA. The new batch of debris has been dug up as construction progresses.



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