Page 604 - Samples News Today

Solvents. >> testing for contamination, its one of the biggest hurdles to creating a safe product. in fact, studies on the contamination of medical marijuana are pretty alarming. one los angeles case found dangerously high levels of insecticide in two out of three medical marijuana samples. its one of the things that concerns main stream doctors about medical marijuana, safety, as well is uniformity and reliability. >> the major issue that physicians have is in the consistency of the product, ho...

This morning on "world news now" -- toxic bombshell. the terrifying scare at the national institutes of health. forgotten samples of smallpox in a storage room. >> there is a potential that someone could have contracted the disease. >> serious safety questions for the countrys top public health experts. on the brink -- the military offensive between the israelis and palestinians. the frightening uncertainty overnight. and big buzz -- after so much anticipation, legal recreational marijuana g...

Negative. >> although police considered ann miller a suspect, erics parents did not. >> erics parents were very adamant that ann was not involved. they had accepted ann into their family. she was their daughter-in-law, and they had a good relationship with ann. >> but strangely against the wishes of erics family, ann insisted that erics body be cremated. >> everyone that follows any type of forensic investigation knows thes yes, sir way to get rid of evidence is by creating somebody. >> eventual...

>> youre using the microscope and all of the features of the microscope to be able to see whats included in that chemical composition of the paint. >> the chemical structures in both samples were identical. scientists also found animal hair plaster. but this wasnt just any animal hair. the animal hair in the plaster found underneath wesleys body had something in common with the animal hair in the plaster from the renovated house. >> i was able to say that these were animal hairs that were from t...

Before, so it was my own curious nature that led me to pull it out of the sample and look for it in other samples. >> trace analyst, cassandra burk extracted these threads and viewed them at 40 times magnification. >> and as soon as i looked at them under the microscope, i could tell they were animal hairs. >> prior to the 1940s, animal hairs were commonly used as a binding and strengthening agent in plaster. this meant the murder site was probably in a house built before 1940. unfortunately, th...

The blood came from. >> all genetic markers that we tested for the evidence samples, the blood samples from the car and from michelle johnson all matched. >> this left only one explanation. michelle was inside haslers truck and bleeding. >> it totally contradicted lukes story. she was inside the truck with luke and that it was her in lukes truck. and he had said that he only put her in the back of the truck. >> police believe michelle, high on methamphetamine and legally drunk, was walking home ...

Two days later, she was gone and pat was dead. >> she stripped sunday night, danced sunday night at the outer limits and then she and her boyfriend leave town. >> police issued an all points bulletin for laura england. in the meantime, at the crime scene, investigators made some important discoveries. first, there were bloody boot prints throughout the house and they had been made at two different times and several hours apart. >> you could see that someone had exited the house and then, apparen...

What constitutes safe swimming water. as a matter of fact beaches surveyed had particle levels of disease putting swimmers at risk of pink eye and stomach flu. how do you know if your favorite beach is safe? joining me now is the proper 23esor and director of the lab for coastal research, dr. beach. welcome back. good to see you. >> my pleasure. hire is a map. we are looking at the 17 dirtiest beaches of the report of referevery coast. we are not seeing along the gulf which is surprising. how do...

Husbands murder. janices muddied clothing had been kept in evidence for the past three years. jacqueline battle scraped some of the mud from the clothing and ground it to a fine powder. battle sifted and weighed the samples. and then examined them under a polarizing microscope. the mud from janises clothing contained bentonite. >> bentonite is a clay-like material comprised of minerals of aluminum silicates, magnesium and iron oxides. ranchers would add bentonite as a sealant so that the water w...

James isaac were anything more than acquaintances. next, investigators asked dick bisbing, senior researcher at mccrone associates, to analyze the dirt on the bottom of larry bruces shoes which were still in evidence. to do this, bisbing used a polarized light microscope. >> its like looking through polarized sunglasses and by manipulating the light we can see different optical properties, different optical features of each of these mineral grains. their appearance, their color, their optical pr...