The need for retirement planning is greater in the 21st century because more people are living longer lives.

Research Find out the life expectancy for people born in the United States in each decade of the 20th century: 1900, 1910, 1920, 1930, 1940, 1950, 1960, 1970, 1980, 1990, and 2000. Then fi nd out how long someone born today is expected to live. Make a timeline illustrating the life spans. Then list several reasons why people are living longer lives.