From Paul Brest, president of the William and Flora Hewlett Foundation.
Here’s a true story of a nudge at the Hewlett Foundation. The out-of-the-box default setting on printer software is to print on one side of a page—though users can choose to print on both sides. The Foundation has changed the default to duplex, allowing users to choose one-sided printing when they so desire. Although we have not undertaken an empirical study, this simple change seems to be saving paper (and trees).