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; September 2018)

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September 14th, 2018 - Posted in Holidays, Nature in Biblical Metaphor, Yom Kippur | 5 Comments

Jonah and the Castor Bean

(Jonah’s shade plant provides a graphic metaphor for the message of this Biblical book.; August 2015)

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August 24th, 2015 - Posted in Nature in Biblical Metaphor, Yom Kippur | 4 Comments

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)

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February 24th, 2010 - Posted in Purim | 3 Comments

Drug-free sabbath candles

(Hemp and the laws of Shabbat candles; July 2008, revised August 2008)

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August 20th, 2008 - Posted in Sabbath | 0 Comments

Pomegranate physics for Passover

(Wood anatomy, heat transfer, and the Paschal lamb; July 2008, revised Aug. 2008 and Aug. 2009)

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August 20th, 2008 - Posted in Passover | 2 Comments

Saying no to bread worship

(Significance of yeast fermentation in pharaonic Egypt and Passover; July 2008)

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August 20th, 2008 - Posted in Passover | 2 Comments

Bananas—For blessing, not for slapstick, even on Purim

(Botanical basis of the blessing said before eating a banana; March 2008)

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August 20th, 2008 - Posted in Blessings, Purim | 1 Comments

A tree that helps animals prepare for Purim?

(Elephants and the marula fruit; March 2008)

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August 20th, 2008 - Posted in Purim | 2 Comments

Charoset for health

(Possible health benefits of cinnamon; August 2007)

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August 20th, 2008 - Posted in Passover | 0 Comments

The olive tree, the post-Chanukah period, and Jewish unity

(Why the menorah became the symbol of Chanukah; January 2007)

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August 20th, 2008 - Posted in Chanukah | 0 Comments

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