Here at World Changing Me we do actions NOT pledges! The good news is we've got a whole section of challenges for you to take to save energy (save money AND save the world). Make sure you through them this Earth Day and do at least one.
If you're energy bills are zero then other great areas to check out today are the KEEPING IT TIDY quest to get rid of litter about the place in three difficulty levels or perhaps you fancy getting closer to nature today or this weekend if you do the BACK TO THE WILD quest is the one for you (again in three levels). Or indeed do any of the quests on this site - they are all designed to save the world in some way.
Have fun and Happy #EarthDay