Welcome to PLoS Conference Postcards. Postcards, as the name suggests, are designed to vividly recount to those not at a conference what happened at the event that was scientifically noteworthy and therefore make the reader wish they had attended. Postcards aim to be a departure from routine conference reports since they are written through the young and enthusiastic eyes of graduate students and postdoctoral fellows who intentionally focus on a small subset of what transpires at the meeting—from keynotes to research paper presentations to posters to working group discussions