New York's Tallest Building Is Now One of Its Greenest

The Empire State Building is perhaps best remembered as the site of King Kong's last stand, but in real life, the monkey on the building's back wasn't a giant gorilla -- it was a giant electricity bill. But that was before one of the most remarkable green renovations ever undertaken.

Air-Conditioning Company Watsco Is Heating Up

Even as homebuilding remains in the doldrums, a booming replacement business for air conditioning systems and a new venture with Carrier are giving Watsco a boost. Now in the high $50s, it could return to its all-time high of $73 within a year.

10 most costly appliances

The average U.S. household will spend about $2,160 this year on home energy, which is $60 less than in 2009, according to the Alliance to Save...