Ecomunicipality.com

Michael Pollan has written that one of the most important contributions average Americans can make to undoing global climate change is to grow a garden.  Certainly, here in the Midwest, even in urban centers in terms of community gardens, there is a whole lot of growing going on.

If he had thought about it longer, or had more room in his NY Times article, Pollan might have gotten around to the concept of xeriscaping, or landscaping to conserve water, reduce pollution and conserve energy.

It's a relatively new concept in landscaping, but the principles it uses are old and well-tested.  Here they are, according to Wikipedia:

1) Waterwise Planning and Design.