#forensic
As modern forensics techniques get better and better, it allows detectives to solve crimes that were previously thought unsolvable. One of the key areas that has led to a rise in convictions for previously unsolved cases has been DNA analysis.
DNA is generally used to solve crimes in two ways. Firstly, when a suspect has been identified, a sample of that person’s DNA can be compared to a sample taken from the crime scene. Secondly, in cases where a suspect has not been identified, evidence from the crime scene can be compared to profiles in DNA databases to attempt to find a match. DNA is thought to be more reliable than traditional forensic techniques such as fingerprints. DNA can also be used to clear suspects so the police can focus their enquiries.
With the rise of people submitting the DNA online for genealogy tests and advances in storing and collecting samples, more and more DNA is being uploaded daily. Cases have been solved decades after the crimes were committed, and there are calls for many cold cases to be reanalysed using modern technology.
One of the biggest problems with DNA today is the backlog of analysing DNA samples from crime scenes. Many crime scene samples, including from sexual assault and murder cases, wait unanalysed for a long time. This prevents the perpetrators from being identified earlier.
Towards the origin of America’s first settlers
The most supported traditional hypothesis points out that the earliest well-established human culture in the North American continent were the Clovis, a population of hunters who arrived about 13,000 years before present from North-East Asia through the Bering Strait, and scattered over the continent.
Image: Professor Daniel Turbón is expert on on molecular and forensic anthropology and the origin and evolution of hominids.
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