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

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How do trees get fluids/nutrients to/from the roots to the top limbs in the absence of a circulatory system?

20 upvotes

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Old film showing a dog's head being "revived". Is this real and/or possible?! (Possibly nsfw) NSFW

1 upvotes

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Why do strong acids and/or bases "eat" through things? What's happening on a molecular level?

1 upvotes

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Years ago my grandfather died of Alzheimer's, but exhibited some very curious symptoms/behaviors. I have some questions.

1 upvotes

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My grandpa died of Alzheimer's years ago, but exhibited some strange behavior/symptoms. How are these possible?

1 upvotes

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How did chickens evolve to shit out an egg a day? How could that possibly be an efficient use of energy/nutrients?

1 upvotes

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Is it better to leave things plugged in or to unplug them and let the battery drain?

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Do any other animals need or prefer to form "bonds" before mating, like humans, or is animal courtship all either physical or opportunistic?

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ELI5: How are meteorites dated to millions of years older than the earth?

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Why is it okay to start with assuming something is an advantage when evaluating the evolutionary purpose of a given trait?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How do trees get fluids/nutrients to/from the roots to the top limbs in the absence of a circulatory system?	20
Old film showing a dog's head being "revived". Is this real and/or possible?! (Possibly nsfw) NSFW	1
Why do strong acids and/or bases "eat" through things? What's happening on a molecular level?	1
Years ago my grandfather died of Alzheimer's, but exhibited some very curious symptoms/behaviors. I have some questions.	1
My grandpa died of Alzheimer's years ago, but exhibited some strange behavior/symptoms. How are these possible?	1
How did chickens evolve to shit out an egg a day? How could that possibly be an efficient use of energy/nutrients?	1
Is it better to leave things plugged in or to unplug them and let the battery drain?	1
Do any other animals need or prefer to form "bonds" before mating, like humans, or is animal courtship all either physical or opportunistic?	1
ELI5: How are meteorites dated to millions of years older than the earth?	1
Why is it okay to start with assuming something is an advantage when evaluating the evolutionary purpose of a given trait?	1