s2017e27 — Guest host Lee Cowan, John Mellencamp; Val and Amy Castor, storm chasers; Herman Wouk; World's largest rose bush; The Bradford Watermelon; Jim Gaffigan.

Name: Guest host Lee Cowan, John Mellencamp; Val and Amy Castor, storm chasers; Herman Wouk; World's largest rose bush; The Bradford Watermelon; Jim Gaffigan.
Released: 2017-07-02
Cast: Jane Pauley, Charles Kuralt, Charles Osgood, Lee Cowan, Erin Moriarty