I saw John Francis talk at ted.com a few months ago, and I was facinated with his story. After witnessing the devastation caused by a 1971 oil spill in San Francisco Bay, he stopped riding in motorized vehicles, a vow which lasted 22 years from 1972 until 1994. From 1973 until 1990, he also spent… Fortsett å lese Read this: Planetwalker – 22 Years of Walking. 17 Years of Silence, by John Francis