Through the looking glass

Have you ever stopped to think about parallel universes? Let’s suspend reality for a bit. You look into your mirror. “Who’s the fairest of them all?” (Oh wait, wrong fairy tale!) As you lift your right hand, your reflection lifts its left. But right-handed you goes about your life, whereas left-handed you only exists through the looking glass. It turns out that nature is the same – and scientists are starting to come up with ways to access the world through the looking glass.