It's a question as old as time itself: which is better, the zombie or the unicorn? In this anthology, edited by Holly Black and Justine Larbalestier (unicorn and zombie, respectively), strong arguments are made for both sides in the form of short stories. Half of the stories portray the strengths--for good and evil--of unicorns and half show the good (and really, really bad-ass) side of zombies. Contributors include many bestselling teen authors,...