On The Gist, the big news from Zimbabwe. Then, Mike asks Maria Konnikova of the New Yorker what can be done to fight off a common cold. Maria's new book The Confidence Game is now available for preorder. For the Spiel, we welcome friendly carolers into the studio to perform a new holiday classic. Today's sponsor: Make holiday shopping easier with the Slate Gift Guide, a curated collection of products selected by Slate editors and writers. These are the things that most improved our lives this year, wrapped up in one guide for you. Find something for everyone on your list at picks.slate.com.

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