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

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How would inserting a floating balloon into the atmosphere of a planet from space be technically different from landing a craft on the rocky surface of a planet from space?

10 upvotes

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Is there a term in evolutionary biology for the opposite of 'koinophilia', where mate selection favors rare or distinctive rather than common phenotypes?

8 upvotes

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Is a cat’s purring a voluntary action or an involuntary reflex?

8 upvotes

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How do archaeologists/anthropologists determine the sex of human remains (not limited just to skeletons)?

4 upvotes

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What families of mammals were living on the sub-continent of India during the period when it was an isolated island, after splitting from Gondwana, but before colliding with Asia?

3 upvotes

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How is it possible to grow multiple rice crops in succession in the same year in the same paddy without rotation like other crops need in order to avoid soil nutrient depletion and inhibit pests?

3 upvotes

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Other than being relatively less hairy, is human skin different from the skin of our closely related ape kin in any interesting ways?

2 upvotes

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Did whales and hippos inherit aquatic birth from a common ancestor, or did they each evolve it separately? And why do some marine mammals, like sea otters, have aquatic birth, but others, like seals and sea lions, don't?

2 upvotes

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Beside storing energy from intermittent renewable sources like wind, are there any high energy consuming industrial processes that can be run intermittently, just when power is very cheap?

1 upvotes

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What percent of the mass-energy of the universe is just the photons? What percent of the mass-energy of the universe is just the black holes?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How would inserting a floating balloon into the atmosphere of a planet from space be technically different from landing a craft on the rocky surface of a planet from space?	10
Is there a term in evolutionary biology for the opposite of 'koinophilia', where mate selection favors rare or distinctive rather than common phenotypes?	8
Is a cat’s purring a voluntary action or an involuntary reflex?	8
How do archaeologists/anthropologists determine the sex of human remains (not limited just to skeletons)?	4
What families of mammals were living on the sub-continent of India during the period when it was an isolated island, after splitting from Gondwana, but before colliding with Asia?	3
How is it possible to grow multiple rice crops in succession in the same year in the same paddy without rotation like other crops need in order to avoid soil nutrient depletion and inhibit pests?	3
Other than being relatively less hairy, is human skin different from the skin of our closely related ape kin in any interesting ways?	2
Did whales and hippos inherit aquatic birth from a common ancestor, or did they each evolve it separately? And why do some marine mammals, like sea otters, have aquatic birth, but others, like seals and sea lions, don't?	2
Beside storing energy from intermittent renewable sources like wind, are there any high energy consuming industrial processes that can be run intermittently, just when power is very cheap?	1
What percent of the mass-energy of the universe is just the photons? What percent of the mass-energy of the universe is just the black holes?	1