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

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Why are humans such creatures of habit when our environment is always changing? Or is a preference for routine simply a product of affluence, something that would not have been present in our evolutionary environment?

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How do animals "know" the warning signs of venomous creatures, such as a black widow's red hourglass or a rattlesnake's rattle? Is it purely instinct, or is there some transmission of information, the way migratory birds "learn" a migration route from those who've flown it before?

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Do women live longer than men even when controlling for dangerous behavior like drinking, smoking, drugs, and speeding?

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What do anthropologists consider to be the subcultures of the United States?

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Do oxygen and other molecules on the very outer edges of the atmosphere get bumped out of gravity's pull and into space, never to return again and, if so, is there a net loss of atmosphere over time?

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Why do old people gradually shift their waking hours so they’re waking up earlier and earlier but also going to bed earlier and earlier?

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If an exoplanet had life on it, or even a civilization, would we even be able to tell all the way from Earth with current technology?

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Did obesity happen in humans' evolutionary environment?

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Of all the factors that made Earth suitable for the development of life, which was/is the closest to being "off" and which have a broader possible range?

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Why do we even talk about a blood–brain barrier when (1) every neuron in the brain needs blood and (2) so many viruses, prions, chemicals, and other things get past the barrier anyway?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why are humans such creatures of habit when our environment is always changing? Or is a preference for routine simply a product of affluence, something that would not have been present in our evolutionary environment?	1
How do animals "know" the warning signs of venomous creatures, such as a black widow's red hourglass or a rattlesnake's rattle? Is it purely instinct, or is there some transmission of information, the way migratory birds "learn" a migration route from those who've flown it before?	1
Do women live longer than men even when controlling for dangerous behavior like drinking, smoking, drugs, and speeding?	1
What do anthropologists consider to be the subcultures of the United States?	1
Do oxygen and other molecules on the very outer edges of the atmosphere get bumped out of gravity's pull and into space, never to return again and, if so, is there a net loss of atmosphere over time?	1
Why do old people gradually shift their waking hours so they’re waking up earlier and earlier but also going to bed earlier and earlier?	1
If an exoplanet had life on it, or even a civilization, would we even be able to tell all the way from Earth with current technology?	1
Did obesity happen in humans' evolutionary environment?	1
Of all the factors that made Earth suitable for the development of life, which was/is the closest to being "off" and which have a broader possible range?	1
Why do we even talk about a blood–brain barrier when (1) every neuron in the brain needs blood and (2) so many viruses, prions, chemicals, and other things get past the barrier anyway?	1