this is crime stories with Nancy Grayson.

Jackie Howard joined today by Joseph Scott Morgan, forensic expert.

He is professor of forensic detectives at the State University and has been covering the

their Chauvin trial since it began two weeks ago.

I have, I don't know in my recollection that I have seen so many technical witnesses

in one case and you know we're not even through with the prosecution's presentation yet.

So far this week alone we've heard from toxicologist, PhD toxicologist, not to mention

graduate level crime scene investigators.

And just the other day Dr. Tobin who was kind of an entertaining, interesting little slice

of life inside of a world that we don't get much view of.

He's a pulmonologist by trade originally from Ireland and he had some interesting insights

into the death of George Floyd from the perspective of believe it or not.

Someone that is air deprived as you would think of say for instance in a case he treats

people with sleep that many of all things.

So he had a really had an interesting take on how human ventilation works that is to inspire

and respire air and process it out of our lungs.

He addressed that and talked about kind of the function and how Mr. Floyd may have been

inhibited by the presence of the weight of Derek Chauvin on his back as he's pressed

into the concrete.

Then we had a forensic toxicologist, PhD level forensic toxicologist from Pennsylvania who

by the way is with a lab called the NMS who handles all of the forensic toxicology for

Hempont County in Minneapolis, Minnesota.

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