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

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Do sick people give off non-auditory/invisible signals of ill health, such as pheromones?

2363 upvotes

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Are pacemakers able to adjust their "heart rate" based on the exertion of the person they belong to? Do they support a feedback system with the body?

1483 upvotes

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How did we figure out how to make bronze before iron?

66 upvotes

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How big of an issue is soil erosion and what can we do about it? Is there anywhere it's particularly bad?

57 upvotes

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How is it that we so reliably have a new influenza vaccine ready each year? What's our process?

17 upvotes

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If you are vaccinated for something, and someone receives a blood donation from you, are they even to a small extent also effectively vaccinated against that thing?

16 upvotes

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How would our trajectories differ between interplanetary travel and interstellar travel?

15 upvotes

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Why is a bone marrow transplant not always 100% effective at curing blood cancers?

8 upvotes

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How does atmospheric CO2 reach underwater plants for photosynthesis?

6 upvotes

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Why does cancer seem to occur in elderly patients rather than younger ones?

2 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do sick people give off non-auditory/invisible signals of ill health, such as pheromones?	2363
Are pacemakers able to adjust their "heart rate" based on the exertion of the person they belong to? Do they support a feedback system with the body?	1483
How did we figure out how to make bronze before iron?	66
How big of an issue is soil erosion and what can we do about it? Is there anywhere it's particularly bad?	57
How is it that we so reliably have a new influenza vaccine ready each year? What's our process?	17
If you are vaccinated for something, and someone receives a blood donation from you, are they even to a small extent also effectively vaccinated against that thing?	16
How would our trajectories differ between interplanetary travel and interstellar travel?	15
Why is a bone marrow transplant not always 100% effective at curing blood cancers?	8
How does atmospheric CO2 reach underwater plants for photosynthesis?	6
Why does cancer seem to occur in elderly patients rather than younger ones?	2