After a discussion of Jewish communal structure in the medieval era, we will look at the devastation of the First Crusade and the Rhineland Massacres of 1096, follow up with some thoughts on the long-term impact on Ashkenazi Culture. Premiering today at 1 pm.

Here’s the latest videos from the Jewish History Lab series.

Brief review of the troubled journey of Rabbi Moshe Hayim Luzzatto, a brilliant young scholar of the 18th century who was persecuted by opponents and hounded across Europe before finding his way to the more tolerant intellectual climate of Amsterdam.

//embed.chabad.org/multimedia/mediaplayer/embedded/embed.js.asp?aid=5035317&width=auto&height=auto&HideVideoInfo=false “Truth will Sprout from the Earth: Gutenberg, the Internet, and the New Uncertainty Principle.” Presentation at the XIII International Torah and Science Conference, Miami. Introductory remarks by Dr. Nathan Katz.

Runaway Yeshiva Bochur’s Work May Aid COVID Research The Jewish Star (March 24, 2021) Shortly after emigrating to Israel in 1901, this Telz-educated orphaned son of a rosh yeshiva earned an unlikely nickname: “the crazy fly-catcher.” Israel Aharoni’s odyssey into the world of middle eastern zoology, long recognized in the scientific world with over 30…

Really thrilled to be part of the inaugural visiting faculty of the Ashkenazium! Please check out this introductory video that beautifully captures the historic “vibe” of the school and its Dean, Dr. Michael Chigel.

A brief overview of the history of Jewish life in Egypt. After looking briefly at the Exodus itself, we look at some major population centers in Elephantine, Alexandria, and Cairo, to the present day. To avoid any possible confusion: this lecture does not argue for continuity between the Jewish population described in the account of…

A brief look at the social and economic background of the post-Talmudic era in Baghdad, with an important digression into the 8th-10th century revolution in information technology that helped propel the authority and influence of the Geonim. The following video will look at the early history of North Africa, an area influenced by their scholarship…

Premiering today at 12:00 noon ET.

Preliminary remarks on the study of the Jews in Africa, followed by The Jews of Ethiopia (origins to 1862). Premiering today at 12 noon ET. Note: for some reason this particular topic attracts an unusual amount of inappropriate commentary. Scholarly, collegial discussion is welcomed here; but I intend to remove hateful remarks, and commentators who…

The Jewish history Lab begins a discussion of the Holocaust. Premieres today at 12 noon ET (New York Time) with live chat. Join us! Archaeological Forgeries and Biblical History Discussion of the difficulty of working with forged artifacts and the study of Biblical History. This video is available to YouTube Channel members at the Researcher…

We got Zoombombed by Neo-Nazis in the middle of the conference, but I manage to deliver my presentation. Join us at 12 noon ET (New York time) for a premiere and live chat! 23 minutes, presentation is a little different than most of my lectures but still fun I think. I hope. Online Courses

Also: Origins of the Jewish People; Neo-Nazis Zoombomb the Sri Lankan Conference of Jews and Buddhists; Soviet Jews During the Interwar Period, and What’s with the Queen of Heaven Business? What is a Synagogue? 7. A Place of Community (Carpentras, France) Final installment in the What is a Synagogue? series. Amazing things in the basement…

Jewish History lectures, recent and forthcoming. It’s been pretty busy. Jews and Ukrainians in Revolutionary Times Ukrainians and Jews forged an unusual partnership during the brief period that followed the collapse of the Russian Empire, creating a Ministry of Jewish Affairs in a short-lived independent Ukrainian state. The experiment was doomed, however, by the Russian…

Warning: this video deals with issues that some of my fellow students of Jewish history might find philosophically challenging.

Also: what’s with the Eternal Light in the Crypto-Jewish synagogue of Belmonte, Portugal?

Please join this new online course on the History of the Holocaust, free and open to the public. YouTube lectures supplemented with self-testing quizzes and other materials. Why was Rabbi Moshe Chaim Luzzatto Persecuted by Fellow Jews?

A discussion of the ubiquitous dedicatory plaques in Synagogue history.

What is a Synagogue? 3. A Place of Rejoicing (Dura Europos and YILC) Thank G-d, the hostages in Colleyville, Texas, have been released to safety. Jews all over the world breathe a sigh of relief, and express gratitude to the law enforcement officers for their protection. After the attacks on synagogues in Pittsburgh in 2018…

Tomorrow is the tenth of Shvat, an important day of the calendar of Chabad Hasidim. On this day in 1950 the 6th Rebbe, Rabbi Yosef Yitzchak Schneerson, passed away; one year later his son-in-law Rabbi Menachem Mendel Schneerson took over the leadership of Lubavitch Hasidim. His role at the helm of Chabad was truly transformational,…

Moses Maimonides was one of the greatest scholars of medieval Jewish history, yet his works were hardly without controversy in his day. This video (48m) surveys his life and work, with emphasis on the subsequent controversies and their resolution.

Good morning fellow students of Jewish History! The Jews of Hungary (A Very Quick Survey!) The Remarkable Wooden Synagogue of Gwoździec, Poland Aryeh at 29%! Great Progress towards his Goal of Representing Team USA at the 2022 Maccabiah Games in Jerusalem!