/u/Etzello's posts in /r/askscience

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Does pregnancy really last a set amount of time? For humans it's 9 months, but how much leeway is there? Does nutrition, lifestyle and environment not have influence on the duration of pregnancy?

4810 upvotes

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Is it possible for a species to have an evolutionary trait that wasn't a result of survival of the fittest? Essentially just a trait that tagged along for the ride as the generations went on?

26 upvotes

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Why do we get fascinated by gore or just can't stop watching something disturbing?

1 upvotes

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Does hormesis achieved from, for example, cold environments affect other factors such as the immune system?

1 upvotes

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What determines how hydrating a drink is? What makes one liquid more hydrating than another?

1 upvotes

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Why do companies and governments invest in humanoid robots?

1 upvotes

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What's the difference between colours from pigment and colour from something that just has the microscopic texture that reflects a colour? Doesn't pigment basically do that?

1 upvotes

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Can vaccines cause an increase in overall inflammatory biomarkers and cause higher pain in sites where older injuries have occurred previously?

1 upvotes

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Do anabolic steroids decrease distribution of protein to things like hair growth and nails?

1 upvotes

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How many species that existed at the dawn of anatomically modern humans still exist today?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Does pregnancy really last a set amount of time? For humans it's 9 months, but how much leeway is there? Does nutrition, lifestyle and environment not have influence on the duration of pregnancy?	4810
Is it possible for a species to have an evolutionary trait that wasn't a result of survival of the fittest? Essentially just a trait that tagged along for the ride as the generations went on?	26
Why do we get fascinated by gore or just can't stop watching something disturbing?	1
Does hormesis achieved from, for example, cold environments affect other factors such as the immune system?	1
What determines how hydrating a drink is? What makes one liquid more hydrating than another?	1
Why do companies and governments invest in humanoid robots?	1
What's the difference between colours from pigment and colour from something that just has the microscopic texture that reflects a colour? Doesn't pigment basically do that?	1
Can vaccines cause an increase in overall inflammatory biomarkers and cause higher pain in sites where older injuries have occurred previously?	1
Do anabolic steroids decrease distribution of protein to things like hair growth and nails?	1
How many species that existed at the dawn of anatomically modern humans still exist today?	1