Easy Steps to Going Green in Your Apartment

Dear Apartment Guru,

It seems like you usually answer inter-personal questions -- but my question is just about being a renter.

Especially since this oil spill in the Gulf of Mexico, I am really concerned about ways I can make my apartment more environmentally polite. But most of what I am finding that might actually make a difference involves altering the apartment in some way that is more my landlord's responsibility -- like solar-paneling the roof and changing hot water heaters.

I don't think it makes sense for me to do a lot of these things but are there any purchases I can make that I would get to keep when I move? Or is there anything I can do right now that makes sense as a renter?

-- Turning Green