After a brief overview placing the medieval period in historical context, we look more deeply at two especially noxious false charges: the Blood Libel and Desecration of the Host.

A look at the role of Jews in the medieval European economy, with emphasis on trade and finance. Premiering today at 1pm ET (New York Time) with live chat.

Please join us this Sunday for an outdoor gathering honoring our community’s heroic kidney donors.

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……

Really pleased to receive author copies of the new Ukrainian translation of my first book! Thanks to translators Anton Kotenko and Oleksandra Nadtoky and all the great people at Dukh i Litera.

Brief video describing the life and work of Don Yitshak Abravanel (Abarbanel), a great Portuguese-Spanish Jewish thinker and leader.  Part of The Jews of Sepharad series.   Click here to view books by Dr. Abramson (remarkably amazing Chanukah reading)

This was a wonderful evening.

Brief video on the life and times of Abraham Senior, important 15th-century Spanish Jewish financier. Suggestions for Chanukah Reading! Click here to order.  

Kindling the candles for the Festival of Lights, we bless G-d for performing miracles of freedom “in those days, in this time.” The commentators have long resolved the jarring use of apparently non-parallel prepositions: in those days, meaning long ago, but in this time, meaning at the present  point in the calendar year. For survivors……

This lecture turned out nicely, I think. If you haven’t heard Rabbi Ya’akov Trump, you’re in for a treat–skip past my part to about 26:00 for the good stuff. A century from now, people will say, “Trump, Trump…wasn’t there also a President by that name?”

YouTube sent me this gif for earning 10,000 subscribers. Really grateful that so many people enjoy Jewish history!

Really looking forward to this class. Thanks to Rabbi Ya’akov Trump for designing the flyer!

Brief overview of the life and work of Abraham Zacuto, important Jewish Iberian astronomer and historian. Now available: revised edition of The Kabbalah of Forgiveness.  Click here for more information.  

Aish Kodesh scholar Daniel Reiser holding a copy of my new book. Like Shakespeare holding a copy of one’s sonnets. Thank you!

The Piaseczno Rebbe, Rabbi Kalonymus Kalmish Shapira, refused to dignify the Nazis by naming them in his wartime sermons in the Warsaw Ghetto. In a rare moment of transparency, perhaps motivated by anguish over the suffering of his Hasidim, the Rebbe briefly suspended his euphemistic terminology with a curt third-person reference in his drashah on Parashat……