**How about "no receipt, thanks" when you are buying items you have no intention of returning. Try it. Tell them before you buy your gum or shampoo that you don't need a receipt...
** Apparently driving with windows open or shut, AC on or off have little impact on fuel economy.
-- but driving on tires with the wrong tire pressure does...
** Small actions like turning off light switches can have the greatest impact on reducing electrical requirements and therefore reducing greenhouse emissions. (more on this from my friend Glen sometime soon).
** Turn off your car!! If you are going to be waiting for someone for more than 1 minute, turn off your car. Great. Now, step outside and do one or more of the following:
-- do some jumping jacks
-- wave to a neighbor
-- pick a weed from your lawn
-- do your secret handshake with your kid (or make one up if you don't have one)
-- throw a ball or a frisbee
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