Cities like San Francisco may have placed a ban on plastic bags in grocery stores and boast of bike-friendly roads, but if you really want to discover the world's greenest spot, you'll have to head overseas, to the small town of Kamikatsu, Japan.
In Kamikatsu, there's no such thing as trash. You won't find a single garbage bin in any of the town's homes, and there's not a dump anywhere within driving distance. Instead, the resourceful residents must compost all waste from their food, and sort other trash into 34 separate categories, with sections for plastic bottles, razor blades, Styrofoam, and various other paraphernalia.
Check out Collin Dunn's blog post "Does Recycling Really Do Any Good?"