I’m at the Go Green Expo Los Angeles in the Convention Center when I notice the plastic water bottles. At the speaking event entitled “Broadcasting the Green Message,” the panel consists of best-selling author Josh “the Lazy Environmentalist” Dorfman, Boise Thomas, co-star of the “Alter Eco” television program on Discovery’s Planet Green, and Sherry Beall, host and producer of “Healthy Planet, Healthy Me!” on local Pacifica radio station KPFK. They’re sitting up on a dais, and have brought their own personal, reusable water bottles. Yet, prominently placed in front of each of them, with its label pointing at us, is a plastic water bottle, the King of the Landfill. Underneath the nearby speaker’s podium, which is transparent, are more water bottles.