With Earth Day 2011 upon us, the recent meteoric rise in gas prices remains a major focus. Personally, every time I drive by a gas station my anxiety level causes me to hyperventilate and lose consciousness (thankfully my dog Buster knows to seize the wheel in such situations). In any case, with gas prices what they are these days, has there ever been a better time to live a greener lifestyle and save a little money to boot? Here are 10 great ways to give your credit cards some rest and rediscover your eco-conscious side at the same time.