Kindness to the earth

I never really gave much thought to being kind to the earth until I read "How are we to live: Ethics in an age of Self-Interest" by Peter Singer. Sure, I wasn't purposely being unkind to the earth. My trash would make it to the garbage can and I would encourage others to put theirs in the can too. Beyond that though, I did not give a thought to how my actions could impact the earth. Then I was taking this Ethics Beyond Borders class back in 2003 and we had to read Singer's book. There was a part in that book that pointed out how many paper towels we use and how we do it without even thinking about it. It got me thinking about the earth in a different way. Kindness to the earth is one of those things that I will be continually working on. Yes, I still use paper towels but I do use them less than I used to. Yes, I still use plastic bags and paper bags occassionally but I more often than not use my canvas bags for shopping. I'd like to invest in some of these re-usable sandwich bags as a next step.

How do you show kindness to the earth?