Via
Slacktivist:
Project Laundry List, which "is making air-drying laundry acceptable and desirable as a simple and effective way to save energy." I heart their website, which is full of such charming bits as a "testimonial" from Ben Franklin ("We must all hang together, or most assuredly we will all hang separately.") and an image of the history of underwear (displayed on a clothesline, natch).
Also enjoy their top ten reasons to hang out your clothes, including (in addition to the obvious energy-saving points) "Clothes last longer. Where do you think lint comes from?" and "An outdoor experience that is meditative."
Yay air-drying!