Tim Halbur

Nairobi planners are promoting a new vision of the African nation criss-crossed with superhighways. Enrique Penalosa visited Nairobi last week to try to persuade them to reverse course.

So says William Schroeer the State Policy Director at Smart Growth America, speaking at the High Speed Rail Conference in D.C. last weekend.

A new report claims that the way the global warming impact of biofuels is measured leaves out the land use component of clearing land and growing crops.

Jacobs' ideas about urban planning bumped her to the top of her Top Urban Thinkers list, but economists are turning to her other books to rethink local economies.

A new book edited by John Julius Norwich with that title selects the 68 cities that have made the most impact on history. The Wall St. Journal has a review.