Advice for Campers, Car Buyers, and Clotheshorses

In the March/April 2006 issue of Sierra, Mr. Green weighs in on cremating cans and dry-cleaning clothes, debates the merits of biodiesel, and revisits organic eating, air conditioning, and sweating "the small stuff."

Should we all be making our fuel from french fries? Should environmentalists be cheering or jeering the development of hybrid SUVs? Send your thoughts and questions directly to Mr. Green, or weigh in in the comments section.