The Cambridge Science Festival is kicking off a question campaign urging festival-goers to voice their questions and begin a dialogue about climate change. "What is climate change?" "Why are glaciers melting and what happens to people who live nearby?"

Send us your questions, and plan to join us on Saturday, April 21st for our "Rivers of Ice: What's Your Question?" symposium featuring mountaineer and filmmaker David Breashears, and moderated by PRI's Marco Werman, with panelists Orville Schell, Susan Solomon, James Wescoat, and Graham Cogley.