This is one of those times that I suddenly stumble upon something awesome, without knowing that I was curious about it before. Thank you so much, The Best Article Every Day! (By the way, it is an excellent blog, check it out.)
How did the question mark get its odd squiggly shape? For that matter, how did other punctuation marks come to be? I bet you want to know now, don’t you? Of course you do.
Ladies and gentlemen, I present to you the origins of modern punctuation marks (?, !, =, &, #). Instant satisfaction of instant curiosity! You’re welcome.