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

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How plausible/accurate is the jaw "shape" of current Megalodon exhibitions?

162 upvotes

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How are the jawlines for extinct sharks determined?

33 upvotes

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Has Australia ever been green and lush? When was the last time?

16 upvotes

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Why are most gorilla/chimpanzee/orangutan eye-whites black, yet human eyewhites are white?

3 upvotes

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Water subjected to microwave radiation displays a distinct fizzing reaction when an object or substance is immersed in it, but water heated from induction (by contact with a hot surface) does not. Why is this?

1 upvotes

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Biology question: Some animals manipulate pure energy ("lamp" bioluminescence, electric shocks, etc), does this added "system" come at a price for the organism or is it self-recharging?

1 upvotes

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How much tablesalt is one million salt grains? How much is one billion? (want to help my 10-year old nephew relate to big numbers)

1 upvotes

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Does naturally-occurring radon (from uranium) have beneficial properties for the development of life on Earth, properties we haven't seen because they work on longer time scales than we have accounted for?

1 upvotes

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Why did evolution leave rhinoceroses with "bad eyesight"?

1 upvotes

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Since the sun gives us Vitamin D, and the sun is made from hydrogen/helium in continuous fusion, does a hydrogen bomb release sunlight? And nutritious vitamin D "fodder"?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How plausible/accurate is the jaw "shape" of current Megalodon exhibitions?	162
How are the jawlines for extinct sharks determined?	33
Has Australia ever been green and lush? When was the last time?	16
Why are most gorilla/chimpanzee/orangutan eye-whites black, yet human eyewhites are white?	3
Water subjected to microwave radiation displays a distinct fizzing reaction when an object or substance is immersed in it, but water heated from induction (by contact with a hot surface) does not. Why is this?	1
Biology question: Some animals manipulate pure energy ("lamp" bioluminescence, electric shocks, etc), does this added "system" come at a price for the organism or is it self-recharging?	1
How much tablesalt is one million salt grains? How much is one billion? (want to help my 10-year old nephew relate to big numbers)	1
Does naturally-occurring radon (from uranium) have beneficial properties for the development of life on Earth, properties we haven't seen because they work on longer time scales than we have accounted for?	1
Why did evolution leave rhinoceroses with "bad eyesight"?	1
Since the sun gives us Vitamin D, and the sun is made from hydrogen/helium in continuous fusion, does a hydrogen bomb release sunlight? And nutritious vitamin D "fodder"?	1