Let’s pretend you ask a classmate for scratch paper to take notes, but rather than giving you that new, fresh sheet you expected, your classmate hands you a piece of paper full of random pencil marks and drawings
You grab an eraser and vigorously rub at it until either your hand is unbearably sore or you have withered a hole straight through the page. But no matter how hard you try, the pencil marks just won’t go away.
This is the predicament we have handed to Earth – only on a much larger, more serious scale. Unknowingly, we have let light pollution smudge the atmosphere, and this damage is not easily erasable.