Planet Earth

Planet Earth

Few U.S. spots in 'world's best cities' list

American cities rank poorly on a new survey of global places with the highest quality of life. 

First showing at No. 31 

Also: 

• The greenest U.S. states
• Why U.S. isn't yet Greece
• Where to retire cheaply

The greenest states in the country

Oregon has one of the highest recycling rates in America, at almost 50 percent. 

See who ranks No. 1 

Also: 

• Is organic really healthier?
• Climate change past impact
• Reduce energy usage