Oetzi the Iceman has a new look. Decades after the famous glacier mummy was discovered in the Italian Alps, scientists have dug back into his DNA to paint a better picture of the ancient hunter.
They determined that Oetzi was mostly descended from farmers from present day Turkey, and his head was balder and skin darker than what was initially thought, according to a study published Wednesday in the journal Cell Genomics.
Oetzi, who lived more than 5,000 years ago, was frozen into the ice after he was killed by an arrow to the back. His corpse was preserved as a “natural mummy” until 1991, when hikers found him along with some of his clothing and gear — including a copper ax, a longbow and a bearskin hat. Since then, many researchers have worked to uncover more about the mummy, which is displayed at the South Tyrol Museum of Archaeology in Bolzano, Italy.
An earlier draft of Oetzi’s genome was published in 2012. But ancient DNA research has advanced since then, so scientists decided to take another look at the iceman’s genes, explained study author Johannes Krause, a geneticist at Germany’s Max Planck Institute for Evolutionary Anthropology. They used DNA extracted from the mummy's hip bone.
The updated genome is “providing deeper insights into the history of this mummy,” said Andreas Keller of Germany’s Saarland University. Keller worked on the earlier version but was not involved with the latest study.
Based on the new genome, Oetzi's appearance when he died around age 45 was much like the mummy looks today: It's dark and doesn't have much hair on it, said study author Albert Zink, head of the Institute for Mummy Studies at Eurac Research in Italy. Scientists previously thought the iceman was lighter-skinned and hairier in life, but that his mummified corpse had changed over time.
His genome also showed an increased chance of obesity and diabetes, the researchers reported.
And his ancestry suggests that he lived among an isolated population in the Alps, Zink said. Most Europeans today have a mix of genes from three groups: farmers from Anatolia, hunter-gatherers from the west and herders from the east. But 92% of Oetzi’s ancestry was from just the Anatolian farmers, without much mixing from the other groups.
___
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.
Jurors in the trial against Theranos CEO Elizabeth Holmes have entered day six of deliberations. Holmes is accused of lying to investors about the functionality of a newly developed blood-testing technology. Andrew George, partner at Baker Botts, joined Cheddar to break down key points in the case and what the jury might be considering during their deliberations. He also noted that the rest of Silicon Valley, including Holmes' business partner, Ramesh "Sunny" Balwani, who is facing identical charges, is closely watching the outcome of deliberations — as it could set the tone for future regulations and Balwani's own trial.
According to researchers, the state of California's cap-and-trade program is currently being undermined by forest fires caused primarily by climate change. Over the past few years, trees that were set aside for the program have been releasing carbon as they continue to burn in fires. Climate Researcher and Policy Director at CarbonPlan Danny Cullenward, joined Cheddar to discuss more.
The CDC's latest update to its COVID-19 quarantine guidelines reduces the isolation period from ten days to just five for people who test positive but are asymptomatic. Dr. Bayo Curry-Winchell, regional clinical director at Carbon Health, spoke to Cheddar's Baker Machado about the new guidance. She noted that while the reduced quarantine time "makes sense," the CDC should also require that a person test negative after their quarantine and before interacting with the public. "There is science behind it. We know that the majority of illness happens, or transmission, one to two days before the onset of symptoms and then two to three days as you have symptoms. So there is science behind the reducement of the actual five days," she said.
Prices at the pump this year reached a seven-year high, and a new forecast from GasBuddy shared with CNN predicts that gas prices will only continue to rise in 2022 and that the national average could even reach $4.00 a gallon; however, analysts at GasBuddy say anything could happen when it comes to gas prices in the future, as the pandemic has made it difficult to make any predictions about the economy. Consumer Energy Alliance federal policy advisor Michael Zehr joins Cheddar News' Closing Bell to discuss.
As the Omicron variant is fueling a surge in COVID-19 cases, parents and schools are faced with tough choices between absences and outbreaks. Matt Barnum, a national reporter at Chalkbeat, joins Cheddar News to discuss.
Ron Gutman, Co-CEO of Intrivo, joins Cheddar News to discuss how the company is creating a test and tech solution for Covid testing called 2Gather, and how it's using data-driven digital diagnostics to make these tests widely available and affordable.
As 2021 winds down, the number of positive COVID-19 cases has surged dramatically with numbers not seen since the heights of the pandemic. Dr. Laolu Fayanju, the regional medical director at primary care provider Oak Street Health, joined Cheddar to discuss the numbers, how the healthcare system is handling the surge this time around, and what it means that the CDC just cut the quarantine time guideline in half for those who are infected. "These are incredibly high numbers because they reflect the transmissibility of the omicron variant," Fayanju said.
