I do a fair bit for the environment by having 3 rainbarrels under downspouts around the house, compost bin in the backyard, turned the A/C up to 25C, turn the furnace down to 18C in the winter. Just bought a new smaller car that gets MUCH better mileage than the old clunker which I recycled to my brother-in-law. I am on a "FreeCycle" Yahoo group for my city to recycle items I don't use anymore (instead of putting them in the dump). I use CFL bulbs where I can throughout the house. Close the blinds during the day to keep the hot sun out in the summer. Replaced drafty windows. I don't bother watering the grass/lawn at all - it will come back in the fall and if I don't water - it doesn't grow and I don't have to mow it! Have drought tolerant plants in the gardens. Only go out shopping once a week and make a list to get it all done in one trip. If I'm in a traffic jam or line up at the gas station - I turn off the car. Turn off lights, TV, etc when not in a room. I'm sure there's more I can't think of right off hand... Every little bit adds up.