Why Do We Have Fear?

The mortal terror that helped our ancestors survive lives on in us, even though the threats they faced are mostly long gone

The Tufts video series Ever Wonder features faculty and other experts answering questions for the curious about all manner of topics—from how anesthesia works to how parrots talk.

You can view the series at http://everwonder.tufts.edu. What do you wonder? Tweet @TuftsUniversity to share your #EverWonder ideas.

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