"It's like the gardener's version of graffiti," says one. In San Francisco, activists hope to transform once-purely ornamental street trees into fruit-bearing ones, to provide fresh fruit to the local community.
Sep 13, 2012 Los Angeles Times
Cities consistently experience higher temperatures than the surrounding countryside due to the 'heat island' effect. With global warming exacerbating these effects, cities are trying to lower local contributors to urban heat.
Sep 12, 2012 NPR
A new online tool uses the power of crowdsourcing to "map, inventory, and preserve the Philadelphia urban forest."
Apr 29, 2011 Azavea
<p>New York's newest force of foresters, hired to plant one million trees in all five boroughs by 2017, are receiving more opposition then one might expect.</p>
Apr 22, 2008 The New York Times