This week, what bear-mounted cameras can tell us about their caribou-hunting habits, ants that mix up their own medicine, and feeling alienated by emotional robots with Online News Editor David Grimm. And Lizzie Wade joins Sarah Crespi to discuss new thinking on the origins of democracy outside of Europe, based on archeological sites in Mexico.

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Download the show transcript.

Transcripts courtesy of Scribie.com.

[Image: rpbirdman/iStockphoto; Music: Jeffrey Cook]