Sept. 11, 2001 pushed many advances in fire science, DNA recovery and disaster response, but many cannot be seen by the naked eye.
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What did NYC know about the 9/11 toxins at ground zero. After 20 years, the truth may soon come out
A 20-year battle to unearth what NYC knew about the dangers of the 9/11 toxins swirling around Ground Zero in the weeks after the terror attacks is reaching a major turning point.
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