(Why do people make declarations over wine? February 2021)
Why does it matter that Rachav hid Joshua’s spies under piles of flax? August 2020
Self justification can lead us down the road from chet to zadon, from carelessness to willful defiance, from rosh to la’anah.
Jonah’s shade plant provides a graphic metaphor for the message of this Biblical book.
(The king of Persia in the book of Esther, the legend of The Wandering Jew, and entomology; February 2010)
(Hemp and the laws of Shabbat candles; July 2008, revised August 2008)
(Wood anatomy, heat transfer, and the Paschal lamb; July 2008, revised Aug. 2008 and Aug. 2009)
(Significance of yeast fermentation in pharaonic Egypt and Passover; July 2008)
(Botanical basis of the blessing said before eating a banana; March 2008)
(Elephants and the marula fruit; March 2008)