John Francis: Walk the earth ... my 17-year vow of silence

During his talk last week, Ken Leinbach from the Urban Ecology Center suggested we look at a Ted.com talk by John Francis.  I looked it up and here it is.

For almost three decades, John Francis has been a planetwalker, traveling the globe by foot and sail with a message of environmental respect and responsibility (for 17 of those years without speaking). A funny, thoughtful talk with occasional banjo.

John Francis walks the Earth, carrying a message of careful, truly sustainable development and respect for our planet.