I am teaching an advanced evolution class for undergraduates and just saw the Nature paper on xenoparity in Messor ants. I was hoping to develop a unit in the class that has students reading solid papers that have results that are really unexpected, surprising or just don�t make sense in the context of evolutionary biology. The Messor paper is a candidate as are some papers about genetic drive. But I thought I would reach out to see if anyone in the evolution community had some good suggestions. You can email me directly. Rodney Mauricio University of Georgia mauricio@uga.edu Rodney Mauricio (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)