I have always had room in my heart for the old-school “edutainment” Carmen Sandiego games, because they taught me a decent bit about geography as a kid. I also loved the awesome television show (with the awesome theme song), although I’m pretty sure I had nightmares about being on the show and getting stuck with an incredibly difficult continent in the grand finale, like Africa.

The Big Bang Theory is a bad show and you should feel bad for liking it. But having a fascination for world flags and their symbolic meaning? That's okay in our books.

When I was a kid, I remember grown-ups joking that any deep hole (that I was digging in a sandbox, perhaps) would go "straight down to China." They were wrong, of course, and today you can answer the same question online with Antipodes Map.

This week we're checking out what it takes to produce zero waste for 30 days, learning how criminals actually steal passwords, looking at where nuclear weapons live around the globe and talking about jobs with the best perks.