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

Environmentally sound Bible publishing

(Environmental certification of wood and paper; July 2008)

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August 20th, 2008 - Posted in Environmental Conservation | 0 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

Sabbatical potatoes

(Contemporary shmitah observance; March 2008)

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August 20th, 2008 - Posted in Land of Israel | 1 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

Mushrooms—Selfish, helpful, and rocket fuel

(Mushrooms in halacha, kabbalah, social criticism, and biology; March 2008)

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August 20th, 2008 - Posted in Blessings | 4 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

Timber for the tabernacle… Today

(Midrashic and botanical evidence of the source of the lumber used in building the mishkan; December 2007)

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August 20th, 2008 - Posted in Land of Israel | 3 Comments

Ashkelon—Ancient Rome’s source for gourmet produce

(Ancient Israeli scallion and shallot exports; December 2007)

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August 20th, 2008 - Posted in Land of Israel | 0 Comments

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