Okay, so you're really happy with Firefox. So am (was) I. But I just found this new browser which is also powered by Mozilla. It's called Flock, and it's completely "green'd" out. Seriously, it works in the same way, only it has tons of bookmarks already installed for green sites that include links to green architecture, green cuisine, hybrids, whatever. Also, when you use the search engines, it donates some money to green causes. Please, if you care about the environment at all, download the browser. It only takes a few minutes, and really is the same thing, only better:
http://browser.flock.com/eco/alltop/