On today's Your Call, we’ll rebroadcast a conversation with Elizabeth Kolbert, author of “The Sixth Extinction: An Unnatural History”. Our planet has already gone through five major extinctions,including the one that wiped out the dinosaurs. But this time, humans are the culprit, potentially eradicating 20 to 50 percent of all living species within this century. How is man-made climate change contributing to the rapid loss of diverse life? And how can we halt it? It’s Your Call, with Rose Aguilar, and you.