[3] Their 2007 book Planetizen's Contemporary Debates in Urban Planning, a collection of brief essays published by Island Press, received positive reviews.

More than any other site, Planetizen is a clearing house of planning ideas, and its inclusivity without any ideological prejudice is both refreshing and invaluable.

In the Developing World, the major problem facing both economies and governments lies in owner-built settlements, favelas, villas miserias, gecekondu, or slums by any other name.

Here the debate is more difficult to access, because for a long time, the problems and solutions found in informal settlements have been either ignored or misinterpreted by mainstream planners.

[5] World economies and major construction companies are driven in part by building megaprojects, the most prominent component of which is one or more skyscrapers.

A city has to balance the drive to build high, using high-tech, with the theoretical objections that skyscrapers drain the resources and energy from the region in which they are implanted.

Subsequent managing editors have included Christian Peralta Madera (2006), Timothy Halbur (2008), Jonathan Nettler, AICP (2012) and James Brasuell (2014).