Sissel Tolaas’ touring retrospective “RE_________” opens at Philadelphia’s Institute for Contemporary Art (ICA), marking the show’s U.S. premiere. Foregrounding issues including climate change, geopolitics, and anthropology through 20 interactive stations that deploy the Norwegian artist and researcher’s primary medium—scent—the exhibition invites visitors to smell, experience, and contemplate Tolaas’ provocative claim: “nothing stinks, only thinking makes it so.”