Recent comments in /f/askscience
[deleted] t1_j1q8rgw wrote
YujiroDemonBackHanma t1_j1q8l7r wrote
Reply to comment by sciencedthatshit in What is the currently-accepted theory for how the moon was formed? by CopperGenie
Question... if something external hit the planet, ejecting debris that eventually formed into the moon, why is the moon so far away? Or, shouldn't the ejected pieces eventually fall to the planet and merge with earth again?
[deleted] t1_j1q8huj wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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kkngs t1_j1q781q wrote
Reply to comment by whyyou- in What happens if a mother‘a child has a non-compatible blood type? What will happen when she is pregnant? by thebookklepto
Right. There is a shot they give to mothers in this situation, called RhoGAM, to help prevent the moms developing permanent antibodies.
[deleted] t1_j1q5zja wrote
[deleted] t1_j1q5bjq wrote
Reply to comment by EstaLisa in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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[deleted] t1_j1q51c9 wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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[deleted] t1_j1q4map wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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whiteknives t1_j1q4f8l wrote
Reply to comment by Graham146690 in How is density measured in porous materials? by That_Lego_Guy_Jack
You nailed it! And now I know just a little bit more than I did yesterday, thanks!
[deleted] t1_j1q4c0w wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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[deleted] t1_j1q4876 wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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whiteknives t1_j1q44tt wrote
Reply to comment by bobbyLapointe in How is density measured in porous materials? by That_Lego_Guy_Jack
Awesome! Yeah I could tell you knew what you were talking about but that last line made me go whaaa? Makes sense!
[deleted] t1_j1q3yl4 wrote
ImprovedPersonality t1_j1q3cvg wrote
Reply to comment by slogginmagoggin in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
We can see signs of water much easier and longer than we can smell them. Just look at the ground, maybe scratch away the dry dirt on top.
dukesdj t1_j1q1xaa wrote
Reply to comment by sciencedthatshit in What is the currently-accepted theory for how the moon was formed? by CopperGenie
It should be noted that despite it being the well accepted theory there are still many unknowns around the exact details of the process (Cattaneo and Hughes 2022).
[deleted] t1_j1q1na0 wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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[deleted] t1_j1q1lxk wrote
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[deleted] t1_j1q16gb wrote
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[deleted] t1_j1q10kx wrote
[deleted] t1_j1q0utl wrote
[deleted] t1_j1q09a3 wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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whyyou- t1_j1q06cz wrote
Reply to What happens if a mother‘a child has a non-compatible blood type? What will happen when she is pregnant? by thebookklepto
Depends; ABO incompatibility is not really an issue, Rh incompatibility is more serious but only if the mother negative and has been previously exposed to Rh(+) antigen (a previous pregnancy, blood transfusions). If the mother has been exposed and mother / baby are incompatible (mother negative, baby positive) it can lead to hemolytic disease of the fetus an autoimmune disease that breaks down the fetus blood cells and can be so severe to cause intrauterine death.
[deleted] t1_j1pzdpn wrote
Reply to comment by [deleted] in I recently learned that humans can smell rain / petrichor (ozone and geosmin) better than sharks smell blood, now considering we don't have any extra hyper specific olfactory organs like some other animals do, how do we achieve this level of detection? by Corvuscoraxaphro
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TheLostHippos t1_j1pzdai wrote
The Khoe-San people are some of the most diverse (genetically) in the world. They have many novel variants in their genetics. In fact, African Tribes often have more novel genetics than most other groups that are limited by bottleneck events or descended more recently from a smaller group. You will find more diverse genetics between african tribes than you would between most other ethnic groups.
"Comparative studies of ethnically diverse human populations, particularly in Africa, are important for reconstructing human evolutionary history and for understanding the genetic basis of phenotypic adaptation and complex disease. African populations are characterized by greater levels of genetic diversity, extensive population substructure, and less linkage disequilibrium (LD) among loci compared to non-African populations."
[deleted] t1_j1qan7m wrote
Reply to How do they know what the inside of the earth is made of, along with the internal temperatures? by Kozzinator
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