Saving the world since May 03, 2010
Learn ways to gather your own food.
Check for air leaks around all your windows and doors. Caulk around all those that leak and save significant heating and cooling energy.
I turn off my engine when ever I'm stopped at a drawbridge.
If the sun is up, my lights stay off.
Use a toilet with two levels of flushing, regular and low (and mostly use low)