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

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Do any modern humans carry mitochondrial DNA or Y chromosomes from Neanderthals or Denisovans?

179 upvotes

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Do endemic human coronaviruses that cause colds mutate and form variants as often as SARS-CoV-2, or have they evolved into a somewhat stable configuration?

46 upvotes

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Are ant scent trails directional? When ants follow a scent trail to a food source and back to their colony, how do they avoid getting turned around and going the wrong direction?

26 upvotes

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Some viruses, such as measles, spread long distances via respiratory aerosols. Others, like influenza, spread shorter distances in larger respiratory droplets. What makes the difference?

17 upvotes

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What (potentially toxic) metal was this silver plated bead made of?

4 upvotes

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How does black iron oxide form on hand forged iron, and why is it better at preventing deterioration than rust?

3 upvotes

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What do we know about how instinctive behavior is inherited, from a genetic/ neurological perspective?

1 upvotes

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Electric eels seem to be able to shock animals at a significant distance. What does the gradient of electrical charge look like in the water, and why does it not affect the eel?

1 upvotes

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How do compost heaps spontaneously combust?

1 upvotes

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Why does wood charcoal generate plasma so quickly in the microwave?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do any modern humans carry mitochondrial DNA or Y chromosomes from Neanderthals or Denisovans?	179
Do endemic human coronaviruses that cause colds mutate and form variants as often as SARS-CoV-2, or have they evolved into a somewhat stable configuration?	46
Are ant scent trails directional? When ants follow a scent trail to a food source and back to their colony, how do they avoid getting turned around and going the wrong direction?	26
Some viruses, such as measles, spread long distances via respiratory aerosols. Others, like influenza, spread shorter distances in larger respiratory droplets. What makes the difference?	17
What (potentially toxic) metal was this silver plated bead made of?	4
How does black iron oxide form on hand forged iron, and why is it better at preventing deterioration than rust?	3
What do we know about how instinctive behavior is inherited, from a genetic/ neurological perspective?	1
Electric eels seem to be able to shock animals at a significant distance. What does the gradient of electrical charge look like in the water, and why does it not affect the eel?	1
How do compost heaps spontaneously combust?	1
Why does wood charcoal generate plasma so quickly in the microwave?	1