/u/Gargatua13013's posts in /r/askscience

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The passenger pigeon has been gone for nigh on a century now. What impact on the environment and ecological services has their dissapearance had? Has anything stepped in to take their place?

124 upvotes

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Is self-awareness biologically useful, and is it subject to selective pressure?

74 upvotes

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How durable could a razor blade be made?

67 upvotes

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Pollen grains grow pollinic tubes of considerable length to reach the ovae through the stigma. Do they do this using solely their own self-contained resources or do they metabolize tissue from the stigma to fuel this growth?

64 upvotes

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What specific adaptations, if any, have Caribou acquired to cope with the large amount of lichen in their winter diet?

59 upvotes

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How do I derive a form of the Navier-Stokes Law which realistically reflects the vorticity surrounding complexly spinose Odontopleurid trilobites in conditions of incompressible steady flow?

55 upvotes

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Are there significant and recognizable differences between the structure of most plant and animal genomes?

49 upvotes

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Are there any know instances of aerial filter feeders, or is filter-feeding restricted to marine/freshwater environments?

49 upvotes

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When comparing the costs of developping, maintaining and operating reusable launch systems with those of single-use systems, are reusable systems worth the effort and if so to what extent?

47 upvotes

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Descriptions of fusion ramscoops (Bussard ramjets) in literature often postulate a frontal funnel-like magnetic field to scoop up interstellar hydrogen. Would the interaction of this field with hydrogen generate friction, or a friction-like effect?

46 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
The passenger pigeon has been gone for nigh on a century now. What impact on the environment and ecological services has their dissapearance had? Has anything stepped in to take their place?	124
Is self-awareness biologically useful, and is it subject to selective pressure?	74
How durable could a razor blade be made?	67
Pollen grains grow pollinic tubes of considerable length to reach the ovae through the stigma. Do they do this using solely their own self-contained resources or do they metabolize tissue from the stigma to fuel this growth?	64
What specific adaptations, if any, have Caribou acquired to cope with the large amount of lichen in their winter diet?	59
How do I derive a form of the Navier-Stokes Law which realistically reflects the vorticity surrounding complexly spinose Odontopleurid trilobites in conditions of incompressible steady flow?	55
Are there significant and recognizable differences between the structure of most plant and animal genomes?	49
Are there any know instances of aerial filter feeders, or is filter-feeding restricted to marine/freshwater environments?	49
When comparing the costs of developping, maintaining and operating reusable launch systems with those of single-use systems, are reusable systems worth the effort and if so to what extent?	47
Descriptions of fusion ramscoops (Bussard ramjets) in literature often postulate a frontal funnel-like magnetic field to scoop up interstellar hydrogen. Would the interaction of this field with hydrogen generate friction, or a friction-like effect?	46