The nation's high school graduation rate is the highest since 1976, but more than a fifth of students are still failing to get their diploma in four years, the Education Department said in a study released Tuesday.

Health insurer WellPoint Inc. will revisit a tumultuous 2012 that included a CEO resignation and choppy earnings when it releases results on Wednesday from last year's final quarter.

Aetna Inc. will sell a Missouri Medicaid business that manages care for more than 100,000 people to fellow health insurer WellCare Health Plans Inc. due to Aetna's pending acquisition of Coventry Health Care Inc.

Americans have a list of important ages. At 16, its time for a drivers license in most states. At 18, its time to register to vote. At 21, people can buy alcohol. At 25, auto insurance usually gets cheaper. The next watershed date in a persons life after that is...