Human Behavior and the Rest of the Natural World

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The latest Red List shows that mammals, amphibians, birds and plants are disappearing faster than ever—because of human activities. Should we care that other species are becoming extinct? What’s their economic value? What to they have to do with human survival? Also, thousands of GM workers walked off their jobs today and, on Reporter's Notebook, Iran's Ahmadinejad has arrived in New York and he's testing the limits of America's free speech tradition.

Juvenile Bengal tiger, courtesy of ARKive, ©