(Why do people make declarations over wine? February 2021)
Fine Linen on Simchat Torah—A Symbol of Social Change
Why does it matter that Rachav hid Joshua’s spies under piles of flax? August 2020
Wormwood and Self-Examination
Self justification can lead us down the road from chet to zadon, from carelessness to willful defiance, from rosh to la’anah.
Jonah and the Castor Bean
Jonah’s shade plant provides a graphic metaphor for the message of this Biblical book.
Achashverosh–Bumbling King or Agricultural Pest Insect?
(The king of Persia in the book of Esther, the legend of The Wandering Jew, and entomology; February 2010)
Drug-free sabbath candles
(Hemp and the laws of Shabbat candles; July 2008, revised August 2008)
Pomegranate physics for Passover
(Wood anatomy, heat transfer, and the Paschal lamb; July 2008, revised Aug. 2008 and Aug. 2009)
Saying no to bread worship
(Significance of yeast fermentation in pharaonic Egypt and Passover; July 2008)
Bananas—For blessing, not for slapstick, even on Purim
(Botanical basis of the blessing said before eating a banana; March 2008)
A tree that helps animals prepare for Purim?
(Elephants and the marula fruit; March 2008)