Daily Archives: July 19, 2017

DNA ‘billion to one’ evidence identifies guilty man for brutal killing 40 years ago

North Wales- Breakthroughs in forensic testing and the “foresight” of scientists has finally helped convict the real killer of a 15-year-old schoolgirl more than 40 years ago.

Ultrasensitive DNA quantification by light scattering

Traces of biomolecules such as DNA can be detected with a new “dynamic” technique based on the observation of association and dissociation events of gold nanoparticles. If the desired DNA sequence is present, it can reversibly bind two nanoparticles together. This can be detected in real time through a change in light scattering. As reported in the journal Angewandte Chemie, this method differentiates true signals from noise and can detect deviations of individual bases.

61 cases under investigation as rape kit test results return

JACKSONVILLE, Fla. – The State Attorney’s Office and the Jacksonville Sheriff’s Office are getting results from rape kits that were left untested for years.
About a year and a half ago, there was a big push to test DNA evidence that had stacked up for decades. More than 1,400 untested rape kits were sent to the lab from the Northeast Florida area.
The results are being put into a national database to see if a suspect can be identified by tracing DNA — and it’s working.

Bodies Found In Swiss Glacier Believed To Be Couple Missing Since 1942

On a summer day in August 1942, Swiss couple Marcelin and Francine Dumoulin set off on foot in the Alps. They never returned.
Now, two bodies have been discovered in a shrinking glacier by a worker from a ski lift company, according to Swiss media, and they are believed to be the couple who disappeared some 75 years ago.