/u/Replibacon's posts in /r/askscience
Here is a gif of 3 months of fetal facial development. There are some distinctly animal like-forms presented here. That implies a kind of evolutionary microcosm. Is this so, or is this just an illusion?
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Am I negating the health benefits of exercise by breathing in a cloud of vehicle exhaust during my biking commute?
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Is it true that when loud noises cause your ears to ring you will never hear that frequency again? If so, why does this happen, and how bad is it for your ability to hear?
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