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Science & Technology

Knowledge Base » Science & Technology
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For millennia we were ridiculed for believing that the world began, cause and effect are not inherently linked, a whole is greater than the sum of its parts, the human psyche is multi-layered...
Is there any evidence that the supernatural exists, or has any bearing on our lives? Does the word "supernatural" even mean anything, other than "I don't understand this (yet)"?
I was in a bit of a hurry, so I didn’t get into it, but I would still like to know: what is the story with electric menorahs?
I always thought Mazel Tov meant “congratulations.” I recently heard that it actually means “good luck.” But I thought Jews don’t believe in luck . . . ?
Question: I will be away from home for some days of Chanukah. Do I need to light a menorah of my own, or will the menorahs kindled by my wife and kids back home “cover” me as well? Response: Let’s say you would be staying at a Jewish home. Your family bac...
Rochel Question: Why is it that Jews give a coin to someone who is traveling? Is the traveler supposed to return the coin when they return? Answer: Our sages tell us "An emissary to do a mitzvah isn't harmed." The exception to this rule is if the emissary...
Predicting the future is big business, as newspaper astrologers and corporate consultants profit from our insatiable desire to know the unknown. Is there anything to it? Do the stars hold any power over our lives?
Yes, there is a prayer recited wherein we ask G‑d to grant us a safe and uneventful journey. Click here for the text of the prayer. See our Traveler's Companion for the laws and customs associated with this brief prayer. Some other tips for drawing specia...
Tribal affiliation follows the direct paternal line, while the question of Jewishness follows the maternal line. Does this mean that genetic testing is a valid way of ascertaining whether one is Jewish or a kohen?
Question: Recently, we stopped watching TV on Shabbat. Now my friends are telling me that TV has no place in a Jewish home. I think it behooves a Jew to be abreast of world events, and what better source than the television? Can we really remove ourselves...
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