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

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At what point of human or hominid evolutionary history did short-term (monthly) ovulation cycles become the reproductive norm?

5076 upvotes

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If an organism sexually reproduced with itself, would the offspring have greater chances of genetic weakness compared to asexual reproduction or cloning?

60 upvotes

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How instinctive is bipedal walking to a human child?

19 upvotes

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How are we so confident that blue whales are the largest animals ever to have evolved on Earth? Could there have been larger sea animals whose skeletons remain inaccessible to human science because of depth or distance?

19 upvotes

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Do animals mistake humans for the front end of quadrupedal animals, and therefore overestimate our actual mass?

10 upvotes

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Why do "Aha!" moments feel good, biologically speaking?

8 upvotes

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In the hypothetical "iron star" scenario, what would the surface conditions of such an object be like?

2 upvotes

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If modern medicine cannot treat viruses, how does the human body's autoimmune system succeed in doing so?

2 upvotes

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How much of social attitudes towards sex is innate and how much is subjective "learned" response?

1 upvotes

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Am I losing the ability to digest beef? Is this even medically possible?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
At what point of human or hominid evolutionary history did short-term (monthly) ovulation cycles become the reproductive norm?	5076
If an organism sexually reproduced with itself, would the offspring have greater chances of genetic weakness compared to asexual reproduction or cloning?	60
How instinctive is bipedal walking to a human child?	19
How are we so confident that blue whales are the largest animals ever to have evolved on Earth? Could there have been larger sea animals whose skeletons remain inaccessible to human science because of depth or distance?	19
Do animals mistake humans for the front end of quadrupedal animals, and therefore overestimate our actual mass?	10
Why do "Aha!" moments feel good, biologically speaking?	8
In the hypothetical "iron star" scenario, what would the surface conditions of such an object be like?	2
If modern medicine cannot treat viruses, how does the human body's autoimmune system succeed in doing so?	2
How much of social attitudes towards sex is innate and how much is subjective "learned" response?	1
Am I losing the ability to digest beef? Is this even medically possible?	1