ELI5: Why do many “bad habits” involve chewing on or picking at our bodies (nails, cuticles, lips, etc.)? Why is this so satisfying and hard to stop when it can be bad for our bodies?
ELI5: Why are some smells stronger than others? E.g. With the same ammount of rotten egg and lavender the rotten egg would be alot more pungent
ELI5: Why do stars twinkle while planets don’t?
Also, why do some faint stars seem to disappear when we look directly at them, but can be noticed when we look at a nearby patch of sky?
