The Ground Floor

The "New American Home" for 2009 debuted last week at the International Builders Symposium in Las Vegas. The 9,000 sq. ft. home features the most recent developments in energy efficiency.

A new study from SMR Research Corporation reveals that people who live alone use 18% more energy than two-person households, and 30% more than three-person homes. McMansions are, or course, cited as big wasters.