Some background to my wife’s altruistic kidney donation two years ago on Erev Yom Kippur. You can help! Click here to support kidney donation through Renewal.

Some historical thoughts on recent usage of the word “pogrom” to describe the current situation in some Israeli cities. Thanks to JTA Editors Philissa Cramer and Andrew Silow-Carroll for shaping the article.

Two brief discussions of the history of women in the Medieval period, 12 pm ET (New York Time) with live chat. Join us!

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…

I am grateful to Rebecca Odessa, an exceptionally talented artist, who recently created thirteen startling and powerful illustrations of the Thirteen Levels of Mercy as described in Rabbi Moshe Cordovero’s Date Palm of Devorah.  I am so pleased that my translation and commentary, entitled The Kabbalah of Forgiveness, helped her clarify her vision and translate it into these…

Maybe this you’ll like? Maimonides on Teshuvah: The Ways of Repentance Click here for the first chapter and some cool videos on the book. Here’s another book that’s super-appropriate for the High Holidays.  Excellent personal reading, and if someone is really angry with you, makes a great gift! (I have given it to several of…

Hello fellow students of Jewish history! I’m very proud to announce the Fall 2016 schedule of lectures in Jewish history, featuring the Jewish History @ J series at the Mighty Avenue J campus of Touro College!  Please visit this link for the full calendar, with photos and descriptions: https://jewishhistorylectures.org/upcoming-public-lectures/ Last year, without even trying, we received…

Here’s an interview I gave on the Baal Teshuvah Show with Pesach Charney.  I like what they did with the green screen–image of the Toronto skyline!

Very pleased to be invited to speak about Maimonides at the Tenth Anniversary Gala Dinner of the Jewish Rockville Outreach Center! If you are in Rockville, MD on September 25, would love to see you there! For more information please visit http://jewishroc.org/events/10thAnnual/.