Living on Earth: GELLERMAN: On the tenth day of the tenth month of the tenth year, the world is holding a clean-up party. It’s organized by 350 dot org, an international campaign to roll back the concentration of CO2 in the atmosphere. At last count we were over 390. More than five thousand climate events are planned around the world. We used Skype to gather a sampling of the October tenth activities. Citizens in Chennai, India host a rally for a strong climate treaty. (350.org) VACHHARAJANI: …