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3
votes
1answer
52 views

How did the water climb so high?

The Gemara in Sota 34 says וכיון שניטבלו רגלי כהנים במים חזרו המים לאחוריהם שנאמר וכבוא נושאי הארון עד הירדן וגו' ויעמדו המים היורדים מלמעלה קמו נד אחד וכמה גובהן של מים שנים עשר מיל על שנים עשר ...
5
votes
1answer
56 views

Is there any support for the claim that tekhelet and argaman could be derived from the same creature?

Is there any indication in Chazal (or at least in other ancient literature) that tekhelet and argaman could be derived from the same creature (as currently proposed by the Tekhelet Institute)?
0
votes
1answer
51 views

Vegan tekheileth

Does the oral tradition that identifies the hilazon as the source of tekheles necessarily indicate that one could not create the indigo-colored wool by other means? The gemara certainly indicates that ...
1
vote
1answer
81 views

The luxury of murex trunculus indigo

The Tekhelet Institute acknowledges that murex trunculus indigo is molecularly equivalent to plant-based indigo that was available in the ancient world for far cheaper (kala ilan). They reason that ...
12
votes
5answers
815 views

How to reconcile Biblical Flood story vs science and history?

Genesis spends a good deal of time -- Chapters 6 through 11 -- discussing the "mabul mayim", a flood that killed all humanity outside the ark. Here is what the Torah's text says about the universality ...
2
votes
1answer
35 views

Is chimutz a wholly physical phenomenon?

The gemara seems to imply that chametz is not a concern with flour mixed with fruit juice. Indeed, amongst other effects, sugars (which are present in fruit juice) slow gluten development. However, ...
0
votes
2answers
74 views

is one an apikores for believing only in Darwin's evolution as a possibility? [duplicate]

Given that the torah's account of creation clearly seems to state that man was created independently from the animals, and likewise, the animals, plants, were created from the ground, would someone ...
-1
votes
1answer
76 views

What's the earliest “acknowledgement” of Heliocentrism in Judaism? [closed]

The English Wikipedia says that Heliocentrism was "official" in Judaism only by the 20th century: In later periods there were no explicit attacks on heliocentrism, although some Rabbis were not ...
6
votes
1answer
58 views

Medicinal etc. Sections of Talmud

Every now and then, then Gemara will go off on a tangent and discuss medical practices (such as towards the end of Gittin and scattered throughout maseches shabbos) or practical safety advice ...
5
votes
2answers
203 views

Science of the Rishonim on “celestial spheres”

In the writings of the Rishonim, it is not uncommon to see explanations of pesukim or of aggadic concepts using the "celestial spheres" model of the universe. The Rambam in particular uses the idea ...
6
votes
0answers
113 views

Dilemma for Jewish Scientists

A member of my shul, scientist who was on the short-list to win a Nobel a couple of years ago, made an interesting point about his own ethical issue. As a scientist involved in biology, ...
4
votes
4answers
200 views

Lubavitch and Geocentricism

I read here in an article by Rabbi Gil Student that the late Lubavitcher Rebbe zy"a believed in the geocentric model despite the modern scientific evidence to the contrary. What is the source for this ...
22
votes
4answers
837 views

Does artificial meat grown in a petri dish have the halachic status of meat?

Scientists are developing means of growing artificial meat in a petri dish. Does such 'meat' have the halachic status of meat? Source: ...
2
votes
1answer
88 views

In vitro meat — further questions

Related to this question: Does artificial meat grown in a petri dish have the halachic status of meat? Assuming that in vitro meat becomes widespread and assuming that it would be hechshered per the ...
28
votes
21answers
1k views

About what were rabbis ahead of the times?

I have heard claims that experts in the world of Torah were significantly ahead of their counterparts in the world of natural science (or mathematics, or psychology, or…) in that they knew X ...
1
vote
3answers
848 views

What is the torah view on the dinosaurs?

What is the Torah view on the dinosaurs? There's no mention of them in the Torah, only that the world was created in 6 days. If they existed, Adam and his descendants should have seen them. Yet ...
24
votes
8answers
1k views

Bereishit vs. science

How does Judaism deal with the differences between scientific evidence of the beginning of the world and the account(s) in Bereishit?
0
votes
1answer
95 views

Can a person (or cat) be both alive and dead at the same time? (Schrödinger's paradox)

Related: Schrödinger's cat and yibbum That question assumes that Schrödinger's paradox is possible, and that someone can be both dead and alive at the same time. So, is that actually true ...
0
votes
0answers
24 views

Why did God make such a vast, expansive universe? [duplicate]

The title pretty much says it all — but it certainly seems unnecessary and plays very well into the theories of people such as Richard Dawkins. How are we best to respond to this challenge of theirs?
7
votes
1answer
343 views

What are some understandings as to how animals populated different continents after the flood?

What are some understandings as to how animals populated different continents after the flood? Did some species of animals survive the flood? Or are we to understand that the flood only affected the ...
13
votes
3answers
415 views

Would a genetically engineered red heifer be usable?

Assuming that a non-Jew chose to create a genetically engineered parah adumah (red heifer) and further assuming it met all the halachic requirements --no two black hairs, hadn't been used for work ...
1
vote
2answers
70 views

Torah and Non-Believers, a/k/a, Scientists and Atheists

Is there evidence in the Torah of people who did not believe in Hashem or any other god(s)? I am specifically inquiring of those who believed in what today would be called science or ...
-2
votes
1answer
68 views

Can we give importance to a person's contributions to one field and ignore those to another? [closed]

If an individual, such as a sage or commentator, does or supports something that's completely inaccurate in one field of study of which he claims to have knowledge, does it make sense to give much ...
0
votes
1answer
45 views

Genetically Breeding a Parah Aduma [duplicate]

Can genetic breeding make cows red? If so would it be acceptable as a Parah Aduma?
3
votes
2answers
96 views
6
votes
3answers
133 views

Age of Universe and Shabbat

If one believes that our world is billions of years old, i.e. accepting the idea of each day in Sheshis Imei Berieshit (the Six Days of Creation) as eras and not literal days, then how does one ...
1
vote
6answers
780 views

How do we reconcile the order of creating animals betweeen Genesis and science?

http://skeptics.stackexchange.com/questions/6932/does-the-torah-encoded-age-of-the-universe-match-science#comment53788_6932 The Genesis 1 creation account conflicts with the order of events that ...
5
votes
2answers
182 views

How to determine what a “normal wind” would do to a sukka

What a "normal wind" ("ruach metzuya") would do affects various laws of sukka construction. For example, in this guide from the Star-K to using sechach mats, they require that sechach-eligible ...
7
votes
1answer
181 views

Shofar from an extinct animal

After paying a trip to the Natural History Museum in London I found myself wondering... would it be allowed (to any extent) to use a shofar of an animal that has kosher simanim but is extinct? There ...
5
votes
0answers
86 views

Does the Torah ever allude to Earth being a spherical celestial body in space?

Taken at face value, the instances in which the Heavens and Earth are mentioned in the Torah, it is the Heavens above and Earth below. From what I gather, many secular scholars take from this that the ...
2
votes
3answers
272 views

How was kashrut affected by Science?

I have been reading a lot of questions concerning kosher foods, to get a better understanding of what it means for something to be kosher. To an atheist, this site is very helpful. But as a chemistry ...
1
vote
3answers
506 views

the four foundations - fire, wind, water, earth

How do we reconcile the torah view of four foundations fire, wind, water, and earth with modern science which demonstrates wind, water, and earth are really not much different. for example, water can ...
-8
votes
3answers
192 views

If water can be turned into blood, do Jews believe in modern science?

Exodus 7:20 states that in a few seconds the water in the Nile was turned into blood. Modern science says that this is almost impossible based on how it was described in the torah. No chemicals were ...
6
votes
0answers
119 views

Can dew really make an eggshell fly?

In פרשת בשלח 16:14, it says -- The layer of dew went up, and behold, on the surface of the desert, a fine, bare [substance] as fine as frost on the ground. On that verse, Rashi says ...
3
votes
0answers
56 views

How does meshane hateva work?

When I asked my teacher about why some physical descriptions in the bible or medical practices in the talmud seem impossible/wrong today he told me that the physical nature of the world changed, which ...
7
votes
1answer
268 views

Mission to Mars: halachic challenges

There is talk in the scientific community of a manned Mars mission: sending an elderly couple to slingshot past Mars and return to Earth as a trial mission, toward eventual other missions that will ...
20
votes
7answers
901 views

Why the vast difference of opinion about the age of the Universe?

5770 and 13,000,000,000 is a big difference! I am looking for a good explanation to the difference opinion of the age of the universe. Please help me out!
3
votes
2answers
160 views

Schrödinger's cat and yibbum

Over Shabbos, the Shalosh Seudos discussion turned to the Monty Hall problem, which confused a lot of people [and which (#Humblebrag) I was able to clear up for them in under 30 seconds ;)]. Then, ...
2
votes
0answers
45 views

Why do we have an appendix according to Torah sources?

Is there any significance in Torah literature, attributed to the appendix and its function in the body?
9
votes
5answers
556 views

Can halacha change based on scientific research?

Shabbat 39a says: "With regard to heating food in the sun itself, everyone agreed that one is permitted to place food in the sun to heat it, as it is certainly neither fire nor a typical form of ...
18
votes
1answer
366 views

Mushrooms in a Vineyard

The bracha on a mushroom is "shehakol" because the Talmud (Berachot 40b) correctly (I think) states that mushrooms do not derive their nutrients from the ground. If a mushroom is growing in a ...
4
votes
2answers
131 views

Shabbat with time dilation in space

I know there is some discussion in space/planets.. How would you keep shabbos in space? The Rabbi I asked this shabbat pretty much said the same thing; and you go by Jerusalem time when in doubt. ...
0
votes
0answers
90 views

Are Chazal more reliable than other Contemporary Sources (or Modern Historians)?

Are Chazal (and traditional sources) considered preferable or more reliable than external (contemporaneous) or academic sources for non Jewish Tradition issues? For example, this question requests ...
5
votes
3answers
256 views

Would time travel be assur/mutar?

Inspired by this question which the author states is not a question of issur/heter. Assuming time travel is possible (to the future or past) is there any reason it should be assur?
3
votes
1answer
62 views

Who suggests that Creation Ex nihilo was only a small point and light?

If this is a simple minded question, please forgive me, but I'm not Jewish and so most of my information is via naive study and second hand. I've been told by a Jewish friend in my physics class ...
4
votes
2answers
226 views

Stars are living creatures?

the Rambam in yesodei torah says that stars are creatures with intellect. how do we reconcile this with modern science which says that they are merely inanimate balls of hydrogen and helium gas.
8
votes
6answers
529 views

Rationalist Position on Bible Ancients' Long Lives

How would a rationalist interpret the long lives of the ancient people enumerated in the Bible, from Methuselah on down? Virtually no person lives more than 120 years today, even with the assistance ...
4
votes
3answers
81 views

Why did God say יִקָּווּ הַמַּיִם, it should happen by itself naturally

In Bereishis 1:9 it says וַיֹּאמֶר אֱלֹהִים יִקָּווּ הַמַּיִם מִתַּחַת הַשָּׁמַיִם אֶל מָקוֹם אֶחָד וְתֵרָאֶה הַיַּבָּשָׁה , And God said, "Let the water that is beneath the heavens gather into one ...
-3
votes
2answers
119 views

Would whole brain emulation be compatible with Judaism?

Many people theorize that in principle, the brain could be uploaded to a computer which would then contain the person's consciousness. Would a successful demonstration of this be compatible with ...
7
votes
1answer
128 views

Is the metamorphosis of a caterpillar into a butterfly mentioned anywhere in Rabbinic literature?

My late great grandfather was a torah scholar, but with all his learning, he never knew that a caterpillar metamorphoses into a butterfly. He was amazed when someone told him about the common ...