Tim Halbur

The Klip House is a series of modular, prefab units that can be clipped together much like the binding on a ski boot, allowing homeowners to lease or own the home parts they need for their stage in life, then upgrade or downgrade when necessary.

New York City's second annual Sustainable Streets Index adds a wealth of data in support of green transportation and street safety.

NY DOT head Janette Sadik-Kahn spoke in Los Angeles earlier this week to a adoring crowd, with advice on how to make room for bikes and pedestrians.

With Gov. Schwarzenegger promising $200 million in tax credits to homebuyers, Paul Shigley says it's worth looking closely at the promises that such credits create new jobs and bolster the economy.

Cornell computer scientists used a supercomputer to analyze nearly 35 million Flickr photographs and determine which cities and landmarks were the most photographed. New York, London and San Francisco come out on top.