Have you ever been caught in a mental conundrum? You know: Homework or TV? Paper or plastic? A how-do-I-land-this-plane-safely-without-killing-296-passengers kind of puzzler? You'll face all sorts of conundrums, decisions, and other mind-boggling situations in this brain-friendly issue of Muse. We've given you a computer who's learning to think, the tricky environmental dilemma of the plastic bag, a guide to running your Victorian household (follow it carefully, and you'll never have to think twice again), and the terrifying-but-true story of the decisions behind a disastrous plane malfunction.

Don't forget, we've also got a thrilling Muserology of sweat, failure, and glory that you can read here. (Hey, are there any athletes out there? Tell us your story for a chance to be published in Muse!) Then check out the mysterious shapes of our Tanagrams contest winners, and head over to the latest contest for our biggest Muse challenge yet: finding a good use for plastic bags.