Even though the U.S. is one of the world's leading exporters, few companies actually sell abroad. One reason may be that exporting requires a company to be highly productive.

Businesses have found that it can pay off to engage in social stewardship, such as donating to charity, protecting the environment and nurturing a diverse and safe workplace.

Better-educated people appear to be in better health than less-educated people. But does more education cause better health, or are there other factors at play – such as income and access to information?

While many believe that money does buy happiness, research shows that richer people aren't necessarily happier people, especially in the United States.