In this episode of One-on-One, María Hinojosa talks with John Francis, the founder of the nonprofit organization Planetwalk. Dedicated to raising environmental consciousness, he stopped using motorized transportation, and for 22 years he walked over 20,000 miles throughout the United States and Latin America. Francis also stopped speaking for 17 years (1973-1990) to demonstrate the importance and power of listening over arguing. Today, he serves as a goodwill ambassador for the United Nations Environment Program and writes pollution regulations for the Coast Guard.