Contrary to what many people think, science by definition doesn’t prove anything. In fact, the job of a scientist is to disprove the work of former scientists. This is how science as a whole progresses. By figuring out what doesn’t work (which tends to be easier), we can figure out what does. At any rate, there are some things that we just haven’t figured out yet. We may have a vague idea of what is going on, but the jury is still out. These are 25 things that scientists are surprisingly still unsure about.
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Although we have a general idea of what is good and what is bad, the science is still a work in progress. (Just consider how we updated the food pyramid!)
What the core of the Earth is made of
We know the inner core is solid and the outer core is liquid, and we’re pretty sure that they consist mostly of nickel and iron…but we’ve never sampled it.
e vs pi
Although we know that both e and pi are irrational, it hasn’t been mathematically proven whether e + pi is irrational. To make things more interesting, we also don’t know if e * pi is irrational. But we know that one of them must be.
Why we yawn
Nobody is completely sure why. Sure, we’re tired. But why does that cause us to yawn, and what does yawning do for us? Scientists are still working to figure this out although there are a couple theories out there.
What causes Earth’s magnetic field
We don’t know how the outer core produces it, and we have no clue why it flips every now and then. In fact, we know more about the inside of the Sun than we do the Earth.