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Police could soon be using hand germs to trace criminals

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WASHINGTON — Forensic scientists could soon use hand germs to help identify criminals and victims, a study said Monday.

Researchers led by Noah Fierer of the University of Colorado at Boulder swabbed individual keys on three personal computer keyboards, extracted bacterial DNA from the swabs and compared the results with bacteria on the fingertips of the keyboards’ users.

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They also lifted germs from an unspecified number of other private and public computer keyboards that the three individuals did not use to see if there was a cross-over between the bacteria on an individual’s hands and bacteria on keyboards that had never been touched by that individual.

The bacteria on each person’s fingers were “personal” and gave a much closer match to the germs on the keyboard they used than to bacteria found on keyboards they had never touched, the researchers said.

The researchers also swabbed nine personal computer mice that had not been touched for at least 12 hours and took bacteria samples from the palms of their owners.

The bacteria on each mouse were “significantly more similar” to those found on the owner’s hand than to bacteria taken from 270 other hands, which were on record from previous studies.

“Each one of us leaves a unique trail of bugs behind as we travel through our daily lives,” said Fierer, a professor at the University of Colorado’s ecology and evolutionary biology department, adding that hand bugs could “become a valuable new item in the toolbox of forensic scientists.”

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Hand germs are abundant, can be lifted from small areas and are remarkably hardy. The researchers found that colonies of hand bacteria remain essentially unchanged after two weeks at room temperature, and recovered within hours of handwashing.

Fingerprints, however, can be smudged or impossible to obtain, such as on fabric.

And unless there is blood, tissue, semen or saliva on an object, it is often difficult to obtain enough human DNA for forensic identification, said the study published in the Proceedings of the National Academy of Sciences (PNAS).

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“Given the abundance of bacterial cells on the skin surface… it may be easier to recover bacterial DNA than human DNA from touched surfaces although additional studies are needed to confirm that this is actually true,” the study said.


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WATCH: Saturday Night Live airs Christmas special — that’s just one giant dig at the Electoral College

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NBC's "Saturday Night Live" aired an opening skit that was just one giant attack on the electoral college.

A snowman introduced the segment, saying that we could look in on the holiday table conversation thanks to hacked Nest cams.

The skit featured a house in San Francisco, California, a second in Charleston, South Carolina and a third in Atlanta, Georgia.

Each dinner table debated impeachment, and the differences between President Donald Trump and his predecessor, President Barack Obama.

But then the snowman said that none of their votes matter.

"They'll debate the issues all year long, but then it all comes down to 1,000 people in Wisconsin who won't even think about the election until the morning of," the snowman said. "And that's the magic of the Electoral College."

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Georgia mayor being recalled for racism resigns from office: report

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Hoschton Mayor Theresa Kenerly resigned in a special city council meeting held on Saturday, the Atlanta Journal Constitution reported Saturday.

"The resignation came just days after Councilman Jim Cleveland resigned saying he‘d rather leave office on his own terms than face voters in a recall election next month," the newspaper reported. "Both resignations follow an AJC investigation launched seven months ago into claims that an African American candidate for city administrator was sidetracked by Mayor Theresa Kenerly because of his race."

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Nine 2020 Democrats unite to demand DNC Chair Tom Perez scrap debate rules: report

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The Democratic National Committee is facing a revolt for the party's 2020 presidential candidates for its restrictive debate rules.

"Nine Democratic presidential candidates, including the party's front-runners, are urging the Democratic National Committee to toss out the current polling and fundraising rules used to determine who appears in televised debates and reopen the exchanges to better reflect the historic diversity of the current field. The candidates say the rules exclude diverse candidates in the field from participating," CBS News reported Saturday evening.

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