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

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Why do we get scars sometimes and not others, and how do healing cells know when to stop?

1658 upvotes

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How much weight does the planet change on a daily basis because of energy bombardment from the sun compared to losses?

74 upvotes

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Why do many seeds contain cyanide?

15 upvotes

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What is the chemical difference between different octane gasoline blends?

9 upvotes

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What is the mechanism that our immune system uses for retaining learned immunities?

5 upvotes

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How long does it take to make a fossil? And are we finding fossils of recent animals?

4 upvotes

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Why do you sometimes involuntarily pee a little when sneezing or blowing your nose?

3 upvotes

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Why does same hair have terminal length, while hair in other locations doesn't?

2 upvotes

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What is the difference in cell structures of soft wood like pine versus hard wood like oak?

2 upvotes

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Why does satellite radio work in bad weather, but not satellite television?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why do we get scars sometimes and not others, and how do healing cells know when to stop?	1658
How much weight does the planet change on a daily basis because of energy bombardment from the sun compared to losses?	74
Why do many seeds contain cyanide?	15
What is the chemical difference between different octane gasoline blends?	9
What is the mechanism that our immune system uses for retaining learned immunities?	5
How long does it take to make a fossil? And are we finding fossils of recent animals?	4
Why do you sometimes involuntarily pee a little when sneezing or blowing your nose?	3
Why does same hair have terminal length, while hair in other locations doesn't?	2
What is the difference in cell structures of soft wood like pine versus hard wood like oak?	2
Why does satellite radio work in bad weather, but not satellite television?	1