On this edition of Conversations, Anita Silvey talks with host Dan Skinner about “Unforgotten: The Wild Life of Dian Fossey and Her Relentless Quest to Save Mountain Gorillas.” With her latest book for National Geographic Kids, Anita Silvey completes a trilogy of biographies about female researchers who chose to study primates. The two previous books are “Undaunted: The Wild Life of Birute Mary Galdikas and Her Fearless Quest to Save Orangutans” and “Untamed: The Wild Life of Jane Goodall.”