Michael Dudley

Widespread mortgage discrimination deprives African Americans of equal access to housing markets, and widens the racial housing gap to "chasm levels".

At a San Francisco event to mark World Environment Day, 50 international mayors set sights on international standards for green urbanism.

The meaning, purpose and future of both the WTC redevelopment and the "war on terror" with which it has been associated for almost four years are growing more uncertain as opposition to the war in Iraq deepens.

The controversy over what to build at ground zero has been complicated, but is also "very New York". The real catastrophe would be to let the crater sit empty any longer than it must.

Nature-oriented urbanism is changing the face of North America's cities.