Will The Brutal Cold Gripping Chicago Crack Your Teeth?

When John was a young boy, he read in National Geographic that people who live in extreme cold run the risk of cracking their teeth if they ingest hot tea to soon after coming in from the cold.  Lauren is skeptical of his claims.  So who can answer this question?  John's dentist and cousin Dr. Vasilios S. Panos, DDS, has the answer…