what one change will you make / have you made for a "greener" planet?

Question

i.e. not leaving on lights, turning TV off standby when finished. etc

Answer 1

I buy used clothing and other products from Goodwill, Salvation Army, or other thrift stores as often as possible. I don't feel right about adding to consumerism by buying more and more products when useful products already exist. It takes too much energy and too many resources to keep making "things" for us to have.

Other actions, of course, but I feel very strongly about this one.