Have you ever noticed that some families seem to have all boys or all girls? It’s one of those curious things you might casually wonder about at a family gathering or when meeting new friends. It turns out, science is now shedding light on this very question — and the answer may surprise you.

Just last week, NPR published a compelling article revealing a groundbreaking study that analyzed decades of birth data. The research showed that larger families tend to have a strikingly skewed pattern: they often have all boys or all girls more often than would be expected by chance. The odds aren't the neat 50/50 split we've always assumed. Intriguing, right? You can read the full NPR article here.

So, what’s going on? Why do some families seem to