Beginning in 2022, I've had the opportunity to prepare and deliver Chaburahs (short lectures) on Torah topics that are of interest me. I figured this would be a good place to store the source sheets and share them with those who may be interested. If there's a topic that interests you, or if you have any questions, you are welcome to email me at Doctor@BergenEndoCare.com.
2026
Shabbos, then and now: From the Cairo Genizah to the Modern Home
The compelling case for an earlier Tzeis, revised and expanded (Audio Shiur link)
A social and cultural history of Shabbos
2025
The Year Yom Kippur Split: The Wild Calendar Controversy of 921/922 CE
Impact of Timekeeping Technology on Halacha
A Fresh Look at Kiddush Levanah
How it's Made: the Jewish Calendar (Audio Shiur link, second half)
2024
Does Anyone Actually Know what the Molad is? (Audio Shiur link)
What Causes the Moon to Shine?
"And I Don't Believe in Time"
Reyach Nichoach and the Mystery of Olfaction
2023
The Compelling Case for an Earlier Tzeis
Aliyah LiRegel and Ancient Travel
2022
The History of Alcohol and Drinking on Purim