Bowdoin students took a break from their Ivies revelries Saturday to revel for a cause. They gathered at noon in front of the Peary-MacMillan Arctic Museum to dance together as part of the “Polar Bear Uprising,” a worldwide event organized by the Sierra Club and Center for Biological Diversity to advocate for the protection of polar bear habitat. Molly Taft, the Arctic Museum’s curatorial intern, organized the eco-Ivies event.