Seattle is one of the most enviromently friendly cities! It's home to me and also many animals and plants.
Seattle passed a law that grocery stores have to use bags that you can reuse and I find that law to be wonderful for the sealife and other animals that plastic bags could harm.
Seattle also has an excellent walkability and many people are always out and about doing errands or bicycling to work. :)
Seattle is excellent for Earth Lovers and if you considering moving here make sure you love to walk.