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

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Why do mammals usually have dull coloration when compared to some birds, reptiles and fish?

1315 upvotes

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Protons in a nucleus are held together by nuclear force, but since they are positively charged, must they all be repelling each other as well?

18 upvotes

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During the Carboniferous period, the southern region of Gondwana was covered in ice. Do we know of any animals that adapted to the polar regions of the world during this time?

1 upvotes

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During the Carboniferous period, the southern region of Gondwana was covered in ice. Do we know of any animals that adapted to the polar regions of the world during this time?

1 upvotes

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Would a large-scale nuclear exchange like that which could have occurred between the United States and Soviet Union cause a mass extinction of similar intensity to that at the end of the Cretaceous? Or would it be more or less severe, or would there be no mass extinction at all?

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A Question about Animal Reproduction

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If the Milky Way-Andromeda collision were to occur now rather than in several billion years, what effects could we observe on earth?

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Why didn't Haast's eagle start eating humans after the Maori killed off the moa?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why do mammals usually have dull coloration when compared to some birds, reptiles and fish?	1315
Protons in a nucleus are held together by nuclear force, but since they are positively charged, must they all be repelling each other as well?	18
During the Carboniferous period, the southern region of Gondwana was covered in ice. Do we know of any animals that adapted to the polar regions of the world during this time?	1
During the Carboniferous period, the southern region of Gondwana was covered in ice. Do we know of any animals that adapted to the polar regions of the world during this time?	1
Would a large-scale nuclear exchange like that which could have occurred between the United States and Soviet Union cause a mass extinction of similar intensity to that at the end of the Cretaceous? Or would it be more or less severe, or would there be no mass extinction at all?	1
A Question about Animal Reproduction	1
If the Milky Way-Andromeda collision were to occur now rather than in several billion years, what effects could we observe on earth?	1
Why didn't Haast's eagle start eating humans after the Maori killed off the moa?	1