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A German town built a granary atop its Jewish cemetery. Now the bones are yielding insights about Ashkenazi DNA.
BERLIN (JTA) – The city of Erfurt in central Germany is home to an impeccably restored medieval synagogue made possible because local Jews had been expelled long before the Nazis began their campaign to destroy Jewish sites.
Now, Erfurt’s long-hidden Jewish past is again offering new insights — this time about the genetic history of Ashkenazi Jews.
Human remains from a medieval Jewish cemetery in Erfurt have allowed what researchers say is the largest ancient Jewish DNA study to date. Conducted without disinterring any remains, in keeping with Jewish law, the study published Wednesday in the scientific journal Cell found that Erfurt’s medieval Jewish community was more genetically diverse than their modern-day cousins, and carried many of the same Jewish genetic diseases — such as Tay Sachs and cystic fibrosis — that affect Ashkenazi Jews today.
“There have been many previous DNA studies, but not of Jews,” said geneticist Shai Carmi, a professor at the Hebrew University of Jerusalem, whose search for study material led him to an archaeological dig at the Jewish cemetery in Erfurt. He and his collaborators were able to analyze DNA of 33 individuals who died between 1270 and 1400, using teeth they found there.
The study follows a similar analysis revealed in August by researchers in England, who studied the DNA from skeletons found at the bottom of a medieval well and concluded that the remains were likely of victims of an antisemitic massacre in 1190. Analysis of six individuals prior to their identification as Jewish revealed that Ashkenazi Jews developed a unique genetic variation centuries earlier than realized.
The Erfurt analysis also includes samples from before the epidemic of Black Death that was until recently understood to have created the genetic “bottleneck” that created the genetic markers common among Ashkenazi Jews today.
Erfurt’s Jewish settlement existed from the 11th to 15th century, with a brief gap following a 1349 massacre perpetrated after the Jews were falsely blamed for causing the bubonic plague. Surviving Jews returned there, but after all Jews were expelled once and for all in 1454, the city built a granary on top of the Jewish cemetery.
Karin Sczech participates in the excavation at the medieval Jewish cemetery of Erfurt. (Courtesy of TLDA Ronny Krause)
In 2013, the city approved the repurposing of the unused granary into a parking lot. Because it was an historic site, a rescue excavation was initiated, overseen for the State of Thuringia by German archaeologist Karin Sczech.
Meanwhile, Carmi had been looking for Jewish cemeteries anywhere in the world “where we could analyze remains already excavated,” he told JTA in a telephone interview from Jerusalem. “I consulted historians and eventually reached the archeologist in Erfurt.” Fortunately, he said, “they still hadn’t reburied the remains.”
He approached Sczech, who later became a co-author of the new study. In 2018, with a supportive judgment from Rabbi Ze’ev Litke — an Israeli expert on genetics and Jewish law — and permission from Erfurt’s then-rabbi, Benjamin Kochan, work began to extract and analyze DNA from detached teeth found in the graves. (About 500 Jews live in Erfurt today, most of them having migrated from the former Soviet Union since 1990.)
American geneticist David Reich picked up the teeth and brought them back to the department of human evolutionary biology at Harvard University in Cambridge, Massachusetts, where drilling and DNA extraction took place.
While the skeletons were reburied, the teeth are still stored at the research institutes where they have been analyzed, in case scientists need to retest to verify the result.
The project provides an ethical basis for studies of ancient Jewish DNA, Carmi said. “Of course we couldn’t just go to a cemetery and dig and take out skeletons; this would be prohibited,” he said, referring to Jewish law prohibiting the removal of bones from where someone was buried.
But Litke opined that the study could be done, because the bones already had been disturbed for an unrelated reason. “He recommended using teeth, as the analysis does almost no damage,” Carmi said.
There are many motivations to study Jewish DNA: One can find lost relatives going back a few generations, and answer questions about Jewish origin of partners intending to marry. But the goal of Carmi’s team was “to fill the gaps in our understanding of Ashkenazi Jewish early history.”
There are several non-destructive ways to obtain DNA from human remains, said Carmi, who also works as a consultant to an Israeli firm that helps clients trace their genetic roots.
“You can take an almost microscopic slice of bone and extract DNA in a solution, or put the entire bone in a solution and extract the DNA without drilling, without disturbing the dead. This opens the way to doing studies even without teeth,” he added.
His team found that the Erfurt community appeared to fit into two genetically distinct groups, descending either from Middle Eastern or European populations. This genetic variability no longer exists, Carmi said.
At the same time, Carmi said, the analysis found remarkable continuity in the local community, as well. “One third of the Erfurt individuals descended from one woman through their maternal lines,” he said, adding that evidence suggested that she lived between 1,000 and 2,000 years ago.
In a press statement, geneticist Reich of Harvard said the work “also provides a template for how a co-analysis of modern and ancient DNA data can shed light on the past. Studies like this hold great promise not only for understanding Jewish history, but also that of any population.”
The research team, with more than 30 scientists, included Hebrew University’s Shamam Waldman, a doctoral student in Carmi’s group, who performed most of the data analysis.
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Video: The queen of Yiddish cabaret
אַן אינטערוויו מיט דער אָנגעזעענער ייִדישער זינגערין, אַקטריסע און שרײַבערין עלענאָר ריסאַ איז לעצטנס אַרויפֿגעשטעלט געוואָרן אויף יוטוב.
אינעם שמועס געפֿירט פֿון אלי בענעדיקט פֿון דער ייִדיש־ליגע, דערציילט ריסאַ וועגן אירע ערשטע טריט אויף דער בינע, די מענטשן און פֿאָרשטעלונגען וואָס האָבן אויסגעבויט איר קינסטלערישן וועג, אירע אויפֿטריטן איבער דער וועלט, און דעם אופֿן ווי זי בויט אַ מוזיקאַלישע פּראָגראַם און קלײַבט אויס לידער. זי רעדט אויך וועגן איר בליק אויף דער צוקונפֿט פֿון ייִדיש־טעאַטער.
ריסאַ איז אַ געבוירענע ייִדיש־רעדערין פֿון פּויליש־ייִדיש, קאָן דער ווידעאָ אויך דינען ווי אַ גוטער לערן־מיטל פֿאַר ייִדיש־סטודענטן וואָס ווילן הערן אַ נאַטירלעכן ייִדיש.
עלענאָר ריסאַ איז אַן אַמעריקאַנער אַקטריסע, רעזשיסאָרין, דראַמאַטורגין און זינגערין, און ייִדיש איז איר מאַמע־לשון. זי איז אויפֿגעוואַקסן אין ברוקלין, די טאָכטער פֿון צוויי לעבן־געבליבענע פֿון פּוילן. אין משך פֿון לאַנגע יאָרן האָט זי געשפּילט, רעזשיסירט און געשאַפֿן סײַ אין ענגלישן, סײַ אין ייִדישן טעאַטער, און איז געווען די קינסטלערישע מיטדירעקטאָרין פֿון דער פֿאָלקסבינע.
זי האָט אויך געשריבן, רעזשיסירט און איבערגעזעצט אַ ריי פּיעסעס און מוזיקאַלישע פּראָגראַמען. אין די לעצטע יאָרן פֿירט זי דעם פּאָדקאַסט “Those Who Were There” בײַם פֿאָרטונאָף־אַרכיוו אין יעיל־אוניווערסיטעט און אַרויסגעגעבן אַ בוך זכרונות, The Letters Project.
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Israel is rich enough to live without American aid. But can it afford to lose what that aid represents?
Israel is a rich country, with a GDP per capita comparable to Germany’s and higher than that of France and Britain. It has one of the world’s most advanced technology sectors, a sophisticated defense industry and formidable military capabilities. Israel is not a developing country dependent on American charity.
But the argument that Israel no longer needs American military assistance because it can afford to pay for its own weapons misses the essential point: The $3.8 billion in annual American military assistance is not simply a financial transfer but part of a much larger strategic architecture that has sustained Israel’s security for decades.
That superstructure includes America’s repeated use of its veto at the United Nations Security Council, intelligence cooperation, access to advanced military technology, joint weapons development, and the projection of American power throughout the Middle East. Above all, it sends an unmistakable message to Israel’s enemies: The United States stands behind Israel.
On Election Day this week, President Trump seemed to throw all of that out the window. He told Fox News’ “Fox & Friends” program that Israel no longer needed the funding and that some Democrats and left-wing politicians were using the financial arrangement to pummel Republicans. “Now, as far as paying Israel, Bibi Netanyahu and I have made a deal that we give Israel $4 billion a year, and we made a deal months ago that we’re stopping,” Trump said. “We’ve already agreed that by the end of this year we won’t be paying Israel.”
Ending the assistance would not automatically terminate intelligence sharing or American diplomatic protection – and it’s unclear what role Congress would play in changing the financial terms of the agreement with Israel, which was established in a Memorandum of Understanding that expires in 2028. But the aid is an important institutional expression of the special relationship, embedding Israel’s security in the American political, military and industrial establishments.
Consider the Iron Dome. Developed in Israel and subsequently supported by substantial American funding, it became a model of bilateral defense cooperation, involving joint production, technological exchange and close coordination between the two countries’ defense industries.
This is a strategic partnership, painstakingly constructed by generations of Zionists and their American supporters, encouraged by generous Jewish donations to both political parties in the U.S. – which in turn reflected, for decades, Jewish affinity with the values Israel represented.
Moreover, American military assistance to Israel is not simply a one-way transfer of money. Much of the assistance is required to flow back into the American economy through purchases of weapons, aircraft, missile systems and other military equipment from U.S. defense manufacturers, supporting American jobs, technological development and the country’s defense-industrial base. Joint projects created opportunities for shared research, production and technological innovation.
All of this has been subordinated to politics.
The relationship is now part of Trump’s damage containment strategy in a week during which the Republicans endured a midterm shellacking. Trump – and even more so Vice President JD Vance – seem to be concluding that American assistance to Israel, in all its forms, has become a political liability for Republicans.
American support for Israel, including among American Jews, has eroded dramatically during the Gaza war, in which tens of thousands of Palestinian civilians have been killed, and so too has support for aid dropped, exposing a widening rupture in what was once a remarkably durable bipartisan and communal consensus.
There is a legitimate argument for transforming the financial relationship between two wealthy, technologically advanced countries. But that transformation requires careful strategic planning, not an Election Day declaration. And even more remarkable is Trump’s assertion that the initiative came from Israeli Prime Minister Benjamin Netanyahu himself.
Netanyahu has spent much of his political career presenting himself as the indispensable guardian of Israel’s relationship with Washington. His supporters have portrayed Trump as Israel’s greatest friend, often dismissing the quieter, institutional commitments of previous American administrations.
Yet it was Barack Obama, frequently vilified by Netanyahu’s political camp, who negotiated the historic $38 billion, 10-year military assistance agreement, just about a decade ago, in a different political epoch, before Netanyahu created scorched earth diplomacy in Israel’s relations with the Democrats.
And it is Trump, celebrated by so many on the Israeli right, who has now proposed bringing that assistance to an early end. The irony could hardly be greater, and the folly of putting all of Israel’s eggs in Trump’s basket could hardly be clearer.
“This is a function of the tremendous deterioration in the relationship with the United States to which the prime minister has led,” said former premier Ehud Olmert, speaking on Israel Radio. He argued that the principal requirement for repairing the relationship is a change of government. He pointed to the conduct of far-right Israeli ministers, including Itamar Ben-Gvir and Bezalel Smotrich, and to Jewish extremist violence in the West Bank as factors contributing to growing American alienation from Israel’s current leadership.
In a statement on Friday, Netanyahu’s office said the change “shows the strength and sophistication of our relationship, and its ability to adapt and stand strong over time.”
The possibility that Netanyahu himself initiated the accelerated termination of American assistance raises serious questions. Netanyahu had predicted an end to U.S. aid just before the Israeli elections and discussed in January phasing out the grants over a decade. Why, then, would he support ending them before the current agreement expires in 2028?
The timing is particularly striking. Trump endorsed Netanyahu ahead of Israel’s October election. Days later, on Election Day in the U.S., he announced that Netanyahu had proposed ending an assistance program that had become politically inconvenient for Republicans.
If Netanyahu subordinated a decision of such strategic importance to his own political interests, it would represent a grave failure of leadership, to say the least. The danger is that the financial component of the alliance will be dismantled without sufficient attention to the political and strategic architecture it has helped sustain.
For decades, the special relationship has been one of Israel’s greatest strategic assets. Its value cannot be calculated by adding up the annual assistance payments. Israel cannot afford to squander the confidence that America will stand behind it when its security is threatened.
Israel’s friends in the United States should not abandon the special relationship without thought for the consequences. And this entire affair is yet one more reason why Israel needs new leadership urgently.
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Young Jews aren’t disengaging, they’re finding Jewish meaning in different ways than their parents and grandparents did
The Jewish community for years has worried about young adults drifting away. It’s true that people in their 20s and 30s are less likely to go to synagogue regularly or belong to a congregation or other Jewish communal institutions, which can make it look like young adults are disengaging from Jewish life.
But new research suggests that many of them aren’t abandoning Jewish life at all. They’re practicing it at home with friends and family, often through food, culture, and meaningful conversation. This development speaks to a broader evolution that will shape the Jewish future. While young adults still crave Jewish meaning, identity, and belonging, they increasingly expect to find them in ways and places different from their parents and grandparents.
The Jim Joseph Foundation recently commissioned Project Prism, a study of more than 2,000 Jewish Americans ages 22 to 40 in 49 states over 40 weeks, conducted in partnership with Sense Worldwide, and with NORC at the University of Chicago. The research included a nationally representative survey alongside qualitative and cultural research, and included many people whose lives rarely, if ever, intersect with Jewish institutions.
What we found complicates the conventional story about religious disengagement. Three out of four Jewish young adults say they do something Jewish regularly. But 45% of all respondents say their Jewish participation occurs exclusively in informal settings. That includes celebrating Jewish holidays with friends and family, engaging in Jewish cooking and food traditions, and discussing Jewish topics or current events with people close to them. Others express their Jewish identity through music, books, humor, and media, or by observing Jewish rituals and traditions at home.
In other words, a young adult who rarely sets foot in a synagogue or other Jewish institution may still consider Judaism a meaningful part of their life. They aren’t abandoning Judaism; they’re simply engaging in it in places and ways that are comfortable for them, reflect the home-based component of Jewish ritual, and bring them meaning.
What communities can do
The research is the starting point for understanding how young adults navigate life. For example, many Jewish young adults feel that they have a strong sense of purpose or direction in their lives, but a much smaller percentage say that being Jewish plays a strong role in creating that sense of purpose. Instead, they draw meaning from helping others, personal growth, their careers, and family. So rather than wondering why young adults are not going to existing Jewish spaces, families and community leaders might ask how Jewish tradition can deepen the things they already find meaningful. Helping a neighbor, caring for family, sharing a meal, and contributing to one’s community are deeply embedded in our teachings and rituals. Thankfully, our community has many existing organizations committed to these experiences. There is more work to do to help young adults find and connect with these existing offerings, and our community should also strive to design new, innovative offerings that don’t yet exist.
At the same time, the research shows that participation alone isn’t enough to create positive outcomes. When a young adult feels a sense of belonging, an experience is much more likely to have a lasting positive impact. Immersive and socially intensive experiences are especially effective. As people are increasingly worried about loneliness and social isolation, it’s important to recognize that simply getting people through the door cannot be the end goal. We need to think about how we help them build relationships and feel a part of something bigger once they arrive.
We also need to remember that these immersive experiences, as powerful as they are, attract only a minority of Jewish young adults. The vast majority are engaging on their own or in smaller groups. For Jewish families and organizations seeking to reach them, the research offers some practical guidance.
Young adults say Jewish experiences would be more appealing if they were more cultural and less religious, offered low-pressure opportunities to participate without a major commitment, fit their schedules, and allowed them to engage alongside people they already know. That could mean a casual Shabbat dinner, a Jewish cultural event that welcomes friends and family, or a gathering where participants can explore Jewish identity without feeling judged or pressured to participate in a particular way. These approaches recognize that young adults are navigating busy schedules, competing demands, and a polarized environment, while still seeking connection and meaning.
At their best, Jewish communities and institutions can provide exactly what these young adults are looking for — relationships, opportunities for meaning, and places where they feel part of something larger than themselves. But doing so may require thinking differently about how and where Jewish life happens. A generation that celebrates a holiday around a friend’s dinner table, talks about Jewish identity with family, and seeks community outside traditional institutions is constructing Jewish life differently than previous generations did, and can still create a meaningful Jewish life.
Rather than expecting young adults to come to them, Jewish organizations can help support the experiences young adults are already creating, whether by providing resources for home-based celebrations, partnering with informal groups, or making existing programs more flexible and welcoming.
Our community can continue offering the powerful immersive experiences that resonate with some while also embracing the more informal expressions of Jewish life that resonate with many others. In doing so, we can help more young adults experience Judaism as a meaningful part of their lives — wherever and however they choose to engage.
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