The Snake River area near Boise, Idaho has one of the world's highest concentrations of nesting raptors. Biologists Mark Fuller, Julie Heath & Chris Parish join Ira Flatow for a look at raptor biology, and the threats the birds are facing. Plus, bringing back the California condor.
Scientists have discovered that a mouse found in Africa can lose large patches of skin and then grow it back without scarring, perhaps as a way of escaping the clutches of a predator. It's a finding that challenges the conventional view that mammals have an extremely limited ability to replace injured body parts.
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