Welcome to the Grammar Minute, where we’re saving the English language sixty seconds at a time! I’m Lauren Smyth, and some of you may remember my guide on how to survive the apocalypse. No matter what kind of apocalypse you’re facing, it will be vitally important to make as many friends and as few enemies as possible.
And so, if you want to avoid making enemies in the apocalypse, you’d better learn how to correctly say and spell the word “nuclear.” Not “nucular,” as some U.S. presidents have been known to say. (Should you really have access to the big red button if you don’t know how to say the word?) Nope, that’s NU-cle-AR. 
Why does this matter? It matters for the same reason any kind of correctness: because it shows you know your stuff, and it disciplines you to be a careful speaker. Over time, practicing correctness in grammar and speech will make you a better writer and a better communicator. But it starts with care in the small things.
That’s your Grammar Minute! Visit thegrammarminute.com for more tips and tricks.