Doobie Brothers, The Funny Farm, Travel Trauma

Lee Cowan hosts this July 4th weekend edition of "Sunday Morning.” In our cover story, Kris Van Cleave looks at the difficulties facing exasperated travelers this summer. Plus: Major Garrett talks with a woman who had to leave the country in 1962 to get an abortion; Lesley Stahl explores animal friendships; Jim Axelrod sits down with the Doobie Brothers; David Martin looks back on the life of WWII Medal of Honor recipient Cpl. Hershel "Woody" Williams; a Robert Krulwich video essay examines the threat posed by rising greenhouse gases; and Rita Braver visits an accidental tourist attraction: gigantic decaying busts of U.S. presidents.