/u/BobHogan's posts in /r/askscience
Do all organisms evolve at the same generational rate? For example, would bacteria mutate more in 50 generations than humans would in 50 generations? Would they mutate the same amount, or even less than humans did?
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If I heat up an iron rod to the point where its glowing, is the iron rod emitting photons or is it just reflecting a higher amount of photons that it normally does at room temperature?
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How do scientists determine how many millions of years ago 2 or more separate organisms shared a common ancestor?
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What evolutionary advantages do the placebo/nocebo effect give us such that they have become a basic part of most, if not all, humans?
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Is there an upper limit to the resolution that we can take pictures/film in (eg HD, 4k, 8k etc), and if so what is the primary deciding factor in this upper limit?
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Why exactly are we driven to procreate? What "spark" happened billions of years ago to program even the most primitive DNA sequences to continuously try and replicate themselves?
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Supposing we had an interstellar vehicle that could travel at a significant portion of the speed of light, >20%C, what would be the biggest challenges we faced while on said vehicle?
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