It's my pleasure this week to play host to the one, the only, Carnival of the Green. Never heard of the Carnival? It's a great travelling circus of eco stories that hops between green blogs. Last week it landed at Neighbourhoods.org (a blog encouraging walking), this week it's here on thegreenguy, and next week it zooms off to Confessions of a Closet Environmentalist ("a struggle against the Greenwash Sea"). So, without further ado, here are this week's top posts from around the green blogosphere.