Advances in cybertechnology, biotechnology and robotics mean that more people than ever before have access to potentially dangerous technologies.
Birds make some of the most beautiful sounds in nature. But scientists don’t really know why birds sing. Diane and author/musician David Rothenberg talk about the mystery of bird song. We’ll also hear about the reappearance of the ivory-billed woodpecker.
- Tim Gallagher editor in chief of "Living Bird," is an award-winning author and wildlife photographer.
- David Rothenberg philosopher, musician, and author of "Why Birds Sing,""Sudden Music," "Hands End," and "Always the Mountains."
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