Michael Dudley

<p>America is reaching the limits of its water supply, signaling a need to change urban development, energy and agricultural practices, writes Shiney Varghese of the Institute for Agriculture and Trade Policy.</p>

<p>Thousands of stores across the country face closure as the credit crisis curtails consumer spending, and chain retailers file for bankruptcy.</p>

<p>After years of decline, Youngstown Ohio has an aggressive plan to bulldoze abandoned properties and pare back on services and infrastructure.</p>

<p>Housing markets around the world are beginning to feel the effects of the American mortgage crisis.</p>

<p>A new report praises Ontario's greenbelt - 11 times the size of Toronto - as a model for urban growth control.</p>