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  1. J

    How did human female breasts evolve into such an important sexual organ?

    Sorry, this is a question on evolution. How did human female breasts evolve into such an important sexual organ? No other mammals other than humans seem to be interested in their corresponding female counterpart's breasts. They may be getting visually attracted, but do not seem to be interested...
  2. J

    Can pull up exercise increase height?

    May be the frequent change of pull-ups made Greg to carry less weight in his early years.
  3. J

    Can pull up exercise increase height?

    My 11 year daughter comes in the shorter side, and by looking at her growth chart, her pediatrician told us that she will be about 5ft tall as an adult. I was wondering if it is worth investing my money and her time in a chin up bar. Even if I buy, I don't expect her to do any pull ups, she...
  4. J

    Can pull up exercise increase height?

    http://www.nsbri.org/DISCOVERIES-FOR-SPACE-and-EARTH/The-Body-in-Space/ "On Earth, the disks between the vertebrae of the spinal column are slightly compressed due to gravity. In space, that compression is no longer present causing the disks to expand." The pull up should not have an impact...
  5. J

    Can pull up exercise increase height?

    Space explorers get longer by couple of inches , at least temporarily. I remember some discussion (in physicsforums?) that in the movie Avatar, they show taller species since the gravity in that planet is less. So I guess gravity does play a role in one's height. Now, I don't know why I'm...
  6. J

    Can pull up exercise increase height?

    Can pull up exercise (at a younger age, say, before 15 years old) increase height? My guess is yes, since weight lifting could decrease height (Or that is another myth?) If yes, by how much?
  7. J

    Role of hands for running

    Anyone? Could it be the evolutionary instinct from our four-legged times?
  8. J

    Role of hands for running

    Why are we unable to run faster without hands moving? What's the role of hands for running?
  9. J

    Need a reccomendation for a good video about evolution.

    I would suggest, instead of trying to teach her evolution, start to give some interest in science - history of science, how scientific theories are evolved etc. Carl sagan's cosmos would be a good start. It is hard to dislike Carl Sagan.
  10. J

    NASA discovers new lifeform with totally different DNA than anything else

    A comment someone posted on some website: "Now, if we could make bacteria that utilize germanium (two periods down from carbon) and arsenic, we'd have living semiconductors...think of it...somewhere in the universe Ge/As bacteria may have evolved into a transistor radio that plays "Duke of Earl"."
  11. J

    Medical Soothing effect

    Why is it that a rocking motion gives a soothing effect? I guess it has to do something with brain fluids, but no clear answer.
  12. J

    Couple of questions on evolution

    Yes, I'm specifically talking about the humans and its origin. About the continents; How did the humans or our ancestor apes moved from Africa/Asia/Europe to Americas and Australias.
  13. J

    Couple of questions on evolution

    The earth plates separated more than 100MYA. I can think of some fish or migrating birds crossing the ocean to different continents. How did the common ape cross the ocean?
  14. J

    Couple of questions on evolution

    1. Is the common ape ancestor common for all the human races? 2. Why don't we see another non-human animal, but very similar to humans-in terms of brain power? For every non-human animal, there exist other species, somewhat similar in terms of appearance or skill set. Did human's advanced...
  15. J

    Nutrition tablets

    Astronauts?
  16. J

    Nutrition tablets

    Why can't we replace food with equivalent nutrition tablets, and/or injection?
  17. J

    Medical Cord blood

    No, the mattress thing won't work. I'm already using the mattress as my sperm bank.
  18. J

    Medical Cord blood

    Thanks for the info. I need to look at the contract now. :rofl: I envy ur sense of humor
  19. J

    Medical Cord blood

    My wife is due by the end of August, and we plan to collect the cord blood. I was wondering what happens to our cord blood, if the cord blood bank goes bankrupt in the future?
  20. J

    Evolution prediction

    How do we differentiate if a change we observe is due to evolution or not? Many of the diseases are hereditary.
  21. J

    Evolution prediction

    A search on evolutionary pressure points me to human's resistance to Malaria and few other diseases. Those don't seem to be strong. Since we don't have any strong evolutionary pressure right now, the prediction would be to continue the same. Right?
  22. J

    Evolution prediction

    Does evolution model predict what's next for each species? What's next for humans?
  23. J

    Medical Oil for dry skin

    Does putting oil on the skin helps to reduce the dry skin? Or, it just looks better because under oil, the dry skin is temporarily invisible? What is baby oil for?
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