Our brains may not be evolving quickly enough to manage rapidly developing and complex problems such as climate change, nuclear proliferation and terrorism, writes author Rebecca Costa. But, she believes, recent research on the neuroscience of insight may help mankind cope with adversity.

Costa joins us to discuss her new book, "The Watchman's Rattle: Thinking Our Way Out of Extinction."

• More: About the book "The Watchman's Rattle: Thinking Our Way Out of Extinction" - at Amazon.com