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Partial layout of the graves discovered during the excavation at the medieval Jewish cemetery of Erfurt. Thuringian State Office for Heritage Management and Archaeology/Karin Sczech + Katharina Bielefeld

Ancient DNA from the teeth of 14th-century Ashkenazi Jews in Germany already included genetic variations common in modern Jews

A German town needed to relocate a medieval graveyard to build a parking garage. A positive side effect: Scientists got to sequence the DNA of Ashkenazi Jews who lived more than 600 years ago.
Given the complexity of polycules, it’s important for participants to be on the same page. Nikki Kahn/The Washington Post via Getty Images

What’s a polycule? An expert on polyamory explains

FTX founder Sam Bankman-Fried, his on-and-off girlfriend, Caroline Ellison, and others involved in the company were reportedly in a polycule together.
#blacktwitter helped mobilize social protests against police brutality across the country, like this one in New York City in July 2020. Ira L. Black/Corbis via Getty Images

Black Twitter’s expected demise would make it harder to publicize police brutality and discuss racism

Black Twitter is often the preferred forum for candid and authentic Black-centered discussions on police brutality. Without it, holding police accountable may become even more difficult.
Fathers’ brains adjust their structure and function to parenthood. María Paternina-Die

Fatherhood changes men’s brains, according to before-and-after MRI scans

Neuroscientists know that pregnant mothers’ brains change in ways that appear to help with caring for a baby. Now researchers have identified changes in new fathers’ brains, too.
Four Père David’s deer (Elaphurus davidianus), also known as milu deer, on a wetland near the Dafeng Milu National Nature Reserve in Jiangsu Province, China. He Jinghua/VCG via Getty Images

Is China ready to lead on protecting nature? At the upcoming UN biodiversity conference, it will preside and set the tone

China has rich natural resources and is seeking to play a leadership role in global conservation, but its economic goals often take priority over protecting lands and wildlife.
In deep brain stimulation, electrodes – the pale white lines – are implanted into a patient’s brain and connected to a battery in a person’s chest. Jmarchn/Wikimedia Commons

Treating mental illness with electricity marries old ideas with modern tech and understanding of the brain – podcast

Deep brain stimulation and trasncranial magnetic stimulation treat mental illness by sending electrical currents into parts of the brain. Every new patient provides researchers with a wealth of information. Listen to The Conversation Weekly podcast.