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

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I've heard that catfish have ring shaped pupils, however this rather surprising adaptation is only ever mentioned in passing. Can anyone provide more information on this?

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How can even unstable "quasi-periodic" Lagrange orbits exist in complicated systems like the Solar System?

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Do (m)any enzymes ever have multiple 'optimal' pH/temperatures for different reactions? ie, could an enzyme A catalyse reaction A at pH/temperature A, and also reaction B at pH/temperature B?

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How might a general purpose AI's memory be structured?

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How much weaker would dark energy need to be than currently predicted for gravity to become the dominant force in the universe?

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What are the most recent features to develop (be evolved? Not sure of the best phrasing) in humans? How did they help early humans to survive?

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If there is a large positive charge buildup in a metal, would this lead to the material being weaker/different structurally?

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What is the equivalent to myoglobin in invertebrates using Haemocyanin?

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I have read that crocodilians are able to get more power from anaerobic/fast-twitch muscle than birds. Is this true? What adaptions would allow for this?

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How effective is human body hair at retaining heat?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
I've heard that catfish have ring shaped pupils, however this rather surprising adaptation is only ever mentioned in passing. Can anyone provide more information on this?	4
How can even unstable "quasi-periodic" Lagrange orbits exist in complicated systems like the Solar System?	1
Do (m)any enzymes ever have multiple 'optimal' pH/temperatures for different reactions? ie, could an enzyme A catalyse reaction A at pH/temperature A, and also reaction B at pH/temperature B?	1
How might a general purpose AI's memory be structured?	1
How much weaker would dark energy need to be than currently predicted for gravity to become the dominant force in the universe?	1
What are the most recent features to develop (be evolved? Not sure of the best phrasing) in humans? How did they help early humans to survive?	1
If there is a large positive charge buildup in a metal, would this lead to the material being weaker/different structurally?	1
What is the equivalent to myoglobin in invertebrates using Haemocyanin?	1
I have read that crocodilians are able to get more power from anaerobic/fast-twitch muscle than birds. Is this true? What adaptions would allow for this?	1
How effective is human body hair at retaining heat?	1