From 2005 to 2007, climate expert David Kroodsma bicycled from California to the tip of South America. He then flew to the east coast of the United States, joined fellow climate activist Bill Bradlee, and the two biked back to California.
Over the course of this journey, David gave 150 presentations about global warming, speaking in English and Spanish to audiences in 16 countries, and he appeared in 70 different media outlets across the hemisphere. David has authored a book about this experience, The Road to Tierra del Fuego: my 21,000-mile ride for the climate, which will be available in late 2011. Watch the video below to learn more about the book: