askscience

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How does eyebrow, arm/leg, dog hair etc. know when to "stop" growing after reaching a certain length?	2
If you drop two portions of steak (same mass, same initial temperature, but one is cooked and one is raw) into two identical bowls of Pho broth, would the equilibrium temperatures of each bowl be different due to the 'cooking' of the raw steak?	1
The ISS has to periodically "boost up" its orbit using thrusters, due to the slight atmospheric drag it experiences. How slight are we talking, and how frequently are these corrections made and to what magnitude?	1
Are the advancements in particle and fluid simulations due purely to increases in computing power these days, or is our understanding of the math and physics still evolving as well?	1
Was skin cancer an elevated concern for humans prior to the invention of sunscreen?	1
Are the advancements in particle and fluid simulations due purely to increases in computing power these days, or is our understanding of the math and physics still evolving as well?	1
Is it true that ancient Roman concrete is superior to modern day concrete, and if so, have we discovered what improvements they made to their formula?	1
Considering quantum scale and the scale of the universe, life as we know it falls within a very narrow range of size. Is there reasoning to suggest that "life" must occur within a certain "range"?	1
Historically, what scientific discoveries were "imagined" by a human brain and then verified, as opposed to discovery through deduction of logic and rationale?	1
We're taught that hot air rises and cold air sinks, because cold air is more dense and vice versa. But if gravity acts upon mass, ie the individual molecules, why does an individual molecule of hot air get pulled differently from one of cold air?	1

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