Usually legislators are elected by the voters, and are receptive to voter opinions. Writing letters and signing petitions still has its merits. Nowadays, you can do a lot of this online.dive_lover88:So in short there ain't much we can do, even if we are all eco-friendly...it's all rest on the high level people in the governments?
I recommend signing up with WWF's "take action" network. They'll send you email alerts on upcoming legislation, and if you give consent, will send e-letters on your behalf to your local congressmen.
http://takeaction.worldwildlife.org/action/index.asp?ms=wwf_header
'Course, if you're not from the U.S., this particular option isn't so useful.