Currently, law enforcement relies on either blood, urine or saliva samples to test for marijuana usage. However, such methods can’t distinguish between recent use and chronic use.
San Bernardino might have an even-more unsettling significance: This was the first multiple-shooter event since Columbine in 1999, and it was also the first in recent years to involve a female.
Identifying skeletal remains is an effective tool in any homicide investigation, but estimating the age and gender of a still-growing person can be a surprising difficult task, especially since humans have grown larger and have matured faster than previous generations.
A reevaluation of DNA evidence found at the scene of a 2000 murder has led to a second arrest in Washington state, 15 years after the crime.
Hope you had a wonderful Thanksgiving weekend—here’s what you might have missed, and what you’ll want to know to get you through your work week.
More than a year after a black man was fatally shot by police in the middle of a Chicago street, the white officer who fired some of the fatal shots has been charged with murder – and a dashcam video of the killing has been released to the public.
Follow-up DNA testing on the samples of the rape kit proved Vargas did not commit the crime – and that the eyewitness testimony which was the basis of his conviction was based on a similar facial tattoo.
Hope you had a wonderful weekend—here’s what you might have missed, and what you’ll want to know to get you through your work week.
Race, and exposure to drugs and explosives have been the focus of recent studies. But now, even gender can be determined from the concentration of amino acids in a fingerprint, according to the latest study published by a University at Albany team in the journal Analytical Chemistry.
A $25,000 reward is now being offered in the case of four women who were found in a drainage ditch behind a seedy motel, facing east toward the bright casino lights of Atlantic City.
DNA early on established the woman and two of the girls were closely related, perhaps mother and daughters. But now advanced new technology has authorities making a push to solve one of the most baffling and gruesome cold cases in U.S. history.
An obscure branch of the human tree of evolution survived for thousands of years in a remote mountain range in Siberia – and even though it eventually died out, left genetic traces within living Homo sapiens.
The terrorist attacks that slaughtered 129 unarmed people and wounded hundreds more in Paris on Friday have prompted airstrikes on the Islamic State in Syria, and a manhunt for the sole remaining killer on the run in Europe.
Match statistics, which give detectives and juries the likelihood of someone being misidentified, are accurate when looking at a single source of DNA. But mixtures at bloody or messy crime scenes add a molecular wrinkle for forensic scientists.
His mitochondrial DNA, preserved by the dry Andes air, shows a rare genetic profile that has nearly vanished from the Americas – a molecular ghost of the past.