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

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Does the fossil record show significant changes in the global diversity of land animals coinciding with the formation or breakup of supercontinents?

677 upvotes

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Is the eyesight of small animals like mice and snakes as poor as ours would be if our retinas were the size of theirs?

98 upvotes

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How are birds able to imitate human labial and dental phonemes without lips or teeth?

44 upvotes

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If you removed all the water and soil from the surface of the Earth, and cut down the exposed rock to below the depth of the seafloor, could you tell from the structure of the remaining bedrock where the seas and mountains had been?

21 upvotes

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If the whole universe were filled with air at sea-level density—and considering only the optical effects, not the physical ones—what would we see?

9 upvotes

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The earth is an oblate spheroid. What effect does it have on plate tectonics when plates move over regions with differing curvature?

9 upvotes

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How does your brain know how to assemble the signals from the individual cells in your retina into a spatial image?

5 upvotes

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Does stellar wind cause dust and gas to collect in stable pockets in the interstices between stars?

2 upvotes

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Is it possible to take an arbitrary 2D slice of the universe—including gravitational curvature—and embed it in a 3D Euclidian space in a way that preserves its intrinsic curvature?

1 upvotes

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Will people who have recovered from Covid-19, and are (hopefully) resistant and non-contagious, show up as positive or negative on the tests currently being performed?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Does the fossil record show significant changes in the global diversity of land animals coinciding with the formation or breakup of supercontinents?	677
Is the eyesight of small animals like mice and snakes as poor as ours would be if our retinas were the size of theirs?	98
How are birds able to imitate human labial and dental phonemes without lips or teeth?	44
If you removed all the water and soil from the surface of the Earth, and cut down the exposed rock to below the depth of the seafloor, could you tell from the structure of the remaining bedrock where the seas and mountains had been?	21
If the whole universe were filled with air at sea-level density—and considering only the optical effects, not the physical ones—what would we see?	9
The earth is an oblate spheroid. What effect does it have on plate tectonics when plates move over regions with differing curvature?	9
How does your brain know how to assemble the signals from the individual cells in your retina into a spatial image?	5
Does stellar wind cause dust and gas to collect in stable pockets in the interstices between stars?	2
Is it possible to take an arbitrary 2D slice of the universe—including gravitational curvature—and embed it in a 3D Euclidian space in a way that preserves its intrinsic curvature?	1
Will people who have recovered from Covid-19, and are (hopefully) resistant and non-contagious, show up as positive or negative on the tests currently being performed?	1