A Secondary Source: Environmental information, discussion, and curriculum ideas by and for high school teachers, students, and innocent bystanders. It is the greatest of all mistakes to do nothing because we can only do a little.
I'm creeping up on 50, and I still haven't bought a car yet. I think I can go the distance on this one. I almost succumbed to teenager-pressure, but I re-did the math and assured myself that taking the occasional taxi when necessary is a very cost-effective way to travel.