There’s a flurry of new numbers on marijuana product labels, and the ratios can feel like a confusing math problem. But there’s a method to the madness — one based more on anecdotes than broadly recognized scientific research. A variety…

Photo: Win McNamee/Getty Images; Party hat: Tim Mulkerin We’ve all been there: You threw an amazing party—maybe a housewarming, maybe a holiday get-together—but now it’s 1, 2 a.m., and your guests just. Won’t. Leave. It’s not your fault you’re just…