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>> its not. >> this guy was the only reason we have this guy is because 10-year-old little boy brutally murdered. >> family wiped out. >> whole family wiped out only reason because of pizza crust even in a fire these pizza crust were able to give d.n.a. samples off of. >> and that is the type of case he had a violent arrest. im not saying for once anyone who has a violent arrest should not be d.n.a. swapped, absolutely. when you get to any arrest. that is a a problem that i have. >> jonah final ...

Checking codis is likely to find a person if they committed a crime before. >> the specific evidence is fascinating because its unique for its kind. what do you mean by that? >> dna evidence is circumstantial in its nature and we have been collecting from bite marks for about 20 years at least. they yield surprisingly good samples. people have been swabbing food like cheese even with the high bacteria content with a sample. these records are only going to increase with the supreme court ruling t...

The pictures from the scene tell a different story. this cleanup guy holding up a dead oiled fish. lucy nicholson pointed for reuters, shooting this -- and then theres this one, another oil covered fish this one also from the reuters photographer. collecting and laying out samples of dead oiled wildlife on the beach that theyre documenting and taking pictures of. the reporting basically all day today has been that no animals have been known to be affected by this spill. this was not a drilling s...

>> we got this new video a couple days ago of duke energys disastrous coal ash spill last year. the people you see taking samples from the spill are water keepers. they turned over to federal prosecutors this video that they took and also the results of their sampling in that river during the spill. well, last week, the federal case about the spill wrapped up and so now we can see that evidence, too. we could see what federal investigators got to see. in that federal case, duke energy pled guilt...

>> we got this new video a couple days ago of duke energys disastrous coal ash spill last year. the people you see taking samples from the spill are water keepers. they turned over to federal prosecutors this video that they took and also the results of their sampling in that river during the spill. well, last week, the federal case about the spill wrapped up and so now we can see that evidence, too. we could see what federal investigators got to see. in that federal case, duke energy pled guilt...

Theyre about this big. >> so thats one drop or thats -- one drop of blood would go into that? what about the rest of that box? >> this is a sample. >> thats a single sample. >> this is a single sample. so this would contain 16 samples. >> of 16 different people. >> right. >> and the heart of this again, is the more often you can have your blood tested the more likely it is that you will catch variations oddities that would signal to a doctor that you have a condition, you have a disease, you hav...

A refractive index. >> refractive index is a measure of the speed of light through a transparent object. >> the glass is placed in a silicon liquid, then heated. the point where the glass disappears is called its refractive index. >> the five fragments that have the same refractive index as the fragments that were recovered from the door are consistent with having originated from the door. >> they came back with not only the glass fragments that matched the windowpanes, but also paint and wood s...

>> he was out that night, no question in my mind. he was not at home. he was out and about. >> less than six hours after henry said he saw williams and cater here, police heard a splash under this bridge. caters body washed up downstream two days later. 30 years ago, there was no dna testing. now there is. and so new evidence. remember those two human hairs found inside 11-year-old patrick baltazars shirt? in 2007, the hair fragments were sent to the fbis dna laboratory in quantico, virginia. th...

Then wrote the inmates name on the vial containing his blood >> when samples are taken, there is a fingerprint that goes with the vial of the sample of blood. the individual who gave this blood obviously put their fingerprint on this vial. >> so prison officials compared the print on chad prices blood vial to chad prices fingerprint. >> the expert said thats not chad prices fingerprint on the vial. great. the next step. whose fingerprint is it? >> the unknown print was run through afis, or the a...

Redeveloping the chemistry, redeveloping the hardware, redeveloping the software that is used in the traditional infrastructure. >> reporter: and your argument would be, as i understand it, that your tests are actually more accurate than the large sample. why? human processing of samples. that today in the lab industry is cause of 93% of the errors. through technology you can automate many of the processes and decentralize and distribute the infrastructure so that you can mitigate the variance t...