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23 years ago, a series of coordinated terrorist attacks killed nearly 3,000 people,

and turned Manhattan's iconic World Trade Center into ground zero.

Most of you probably remember seeing footage and photos of the long, complicated process

of looking for victims in the smoldering debris.

But you might not realize that for

forensic scientists, that work is far from finished even today. For Scientific American Science

Quickly, I'm Rachel Feldman. I'm joined today by Kathleen Carrotto, the Forensics

Executive Director at Syracuse University College of Arts and Sciences. She's here to tell us how the staggering

scale of 9-11's mass casualty event presented forensic scientists with new challenges,

and how the lessons they learned are helping them identify wildfire victims, suspected criminals,

and the many remaining casualties of 9-11 itself. Thank you so much for joining us today.

My pleasure.

So broadly speaking, what kind of impact did 9-11 have on the forensic science community?

Well, the event that happened in 9-11 in the World Trade Center was basically the first time that DNA analysis was used to identify

victims on such a large scale. So while there were about 2,700 victims or so, due to the fire,

the explosion, the building collapse, there were a lot of very small samples. A lot of the bodies

were degraded. Really, that's the first

...