The Center for Retirement Research produced this excellent brochure to explain Target date funds for investing your retirement savings: http://fsp.bc.edu/wp-content/uploads/2011/12/TDF-booklet_1205a.pdf
Your savings need to grow…and they need to be safe
Target Date Funds shift your savings from growth to safety
They restore the target mix of stocks and bonds when markets crash
The Target Date: pick the Date that suits your needs
Fees: Are you getting your money’s worth?
Just one fund? It’s your choice